APA (7th ed.) Zitazioa

Viveen, W. J. A. R. (1980). Practical manual for the culture of the african catfish Clarias Gariepinus. Directorate General International Cooperation of the Foreign Affairs.

Chicago Style (17th ed.) Zitazioa

Viveen, W. J. A. R. Practical Manual for the Culture of the African Catfish Clarias Gariepinus. La Haya: Directorate General International Cooperation of the Foreign Affairs, 1980.

MLA (9th ed.) Zitazioa

Viveen, W. J. A. R. Practical Manual for the Culture of the African Catfish Clarias Gariepinus. Directorate General International Cooperation of the Foreign Affairs, 1980.