Wikipedia articles are a person case in point; search engines like google and yahoo normally clearly show these at the top of search results. Of course, the link must be nonadvertising and helpful to readers. Wikipedia is accessible in many languages, so no issue for non-English Web sites. See https://seo-backlinks-buy17305.bcbloggers.com/20242822/the-buzz-on-why-are-wiki-articles-backlinks-important-for-seo