APA (7th ed.) Zitazioa

(2008). Building findable websites: Web standards, SEO, and beyond / [Aarron Walter].

Chicago Style (17th ed.) Zitazioa

Building Findable Websites: Web Standards, SEO, and Beyond / [Aarron Walter]. 2008.

MLA (9th ed.) Zitazioa

Building Findable Websites: Web Standards, SEO, and Beyond / [Aarron Walter]. 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.