Wikipedia: Manual of Style/Linking

through hyperlinks is a crucial feature of Wikipedia. Internal Internet Marketing   links bind the project along into AN interconnected whole. Interwikimedia links bind the project to sister comes like Wikisource, Wiktionary, and Wikipedia in alternative languages, and external links bind Wikipedia to the globe wide net.

Appropriate links offer instant pathways to locations among and outdoors the project that area unit doubtless to extendreaders’ understanding of the subject at hand. Whenever writing or writing a commentary, it’s necessary to contemplate not solely what to place within the article, however what links to incorporate to assist the reader realize connected info, further asthat alternative pages ought to carry links to the article. Care ought to be taken to avoid each underlining and over linking, as delineate below.
Principles
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MOS: BTW
MOS: BUILD
Wikipedia relies on machine-readable text, and aims to “build the web” to modify readers to access relevant info on alternative pages simply. Internet Marketing The page from that the link is activated is named the anchor; the page the link points to is named the target.
General points on linking vogue
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MOS:LINKSTYLE
MOS: Internal links
As explained in additional detail at Help: Link § Wilkins, linking are often “direct” ([[Riverside, California]], which ends up in Riverside, California), or “piped” ([[Riverside, California Riverside]], which ends up in Riverside within the text, however still links to the article “Riverside, California”—although the pipe trick is a better thanks to produce this explicit link).
Section headings mustn’t themselves contain links; instead, a} or} example ought to be placed forthwith once the heading.
Links mustn’t be placed within the boldface reduplication of the title within the gap sentence of a leadOverlinking and underlining
“WP: CONTEXT” redirects here. For subject context in articles, see Wikipedia: Writing higher articles § offer context for the reader.
For notices that may be side to articles, see Template: Over linked and Template: Underlinked.What typically ought to be joined
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MOS: UNDERLINK
MOS: UL
An article is alleged to be underlined if words aren’t joined and area unit required to assist understanding of the article. In general, links ought to be created for:

Relevant connections to the topic of another article which will facilitate readers perceive the article additional totally (see the instance below). This may embody folks, events, and topics that have already got a commentary or that clearly merit one, goodbye because the link has relevancy to the article in question.
Articles with relevant info, for example: “see series for relevant background “plicate and repeat links
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MOS: REPEATLINK
MOS: DUPLINK
MOS: DL
Generally, a link ought to seem just one occasion in a commentary, however if useful for readers, a link could also be continual in info boxes, tables, image captions, footnotes, hat notes, and at the primary incidence once the lead. Citations stand alone in their usage, thus there’s no drawback with continuance a similar link in several citations among AN article; e.g. |work= [[The Guardian]].Link maintenance
Linking and continual modification area unit each central options of Wikipedia. However, continual modification makes linking prone to no heritable technical faults, and to the later provision of various info from that that was originally meant. This is often true of each “outgoing” links (from AN article) and “incoming” links Internet Marketing  (to an article).Webpages in English area unit extremely most well-liked. Linking to non-English pages should be helpful for readers within the following cases:

When the web site is that the subject of the article
When linking to pages with maps, diagrams, photos, tables (explain the key terms with the link, in order that those who don’t recognize the language will interpret them)
When the webpage contains info found on no English-language web site of comparable quality, and is employed as a citation (or once translations on English-language sites aren’t authoritative).