APA (7th ed.) Zitazioa
Bilker, H. L. (1981). Photojournalism: A freelancer's guide. Contermporary books, inc.
Chicago Style (17th ed.) Zitazioa
Bilker, Harvey L. Photojournalism: A Freelancer's Guide. Cicago: Contermporary books, inc, 1981.
MLA (9th ed.) Zitazioa
Bilker, Harvey L. Photojournalism: A Freelancer's Guide. Contermporary books, inc, 1981.
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