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.
Čikaški stil citiranja (17. izdanje)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 način citiranja (9. izdanje)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.
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