APA (7th ed.) Zitazioa

Palmer, B. (1999). Oklahoma: The spirit of america. H.N. Abrams.

Chicago Style (17th ed.) Zitazioa

Palmer, Barbara. Oklahoma: The Spirit of America. New York: H.N. Abrams, 1999.

MLA (9th ed.) Zitazioa

Palmer, Barbara. Oklahoma: The Spirit of America. H.N. Abrams, 1999.