APA (7th ed.) Zitazioa

(2011). Easy as FDL: Federal Depository Libraries.

Chicago Style (17th ed.) Zitazioa

Easy as FDL: Federal Depository Libraries. 2011.

MLA (9th ed.) Zitazioa

Easy as FDL: Federal Depository Libraries. 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.