APA (7th ed.) Zitazioa
Library resources & technical services [Libr Resour Tech Serv] NLMUID: 57920670R.
Chicago Style (17th ed.) Zitazioa
Library Resources & Technical Services [Libr Resour Tech Serv] NLMUID: 57920670R.
MLA (9th ed.) Zitazioa
Library Resources & Technical Services [Libr Resour Tech Serv] NLMUID: 57920670R.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.