Cita APA (7th ed.)

Brown, E. E., & Gratzek, J. B. (1980). Fish farming handbook food, bait, tropicals and goldfishes. AVI Publ. Co.

Cita Chicago (17th ed.)

Brown, E. Evan, i John B. Gratzek. Fish Farming Handbook Food, Bait, Tropicals and Goldfishes. Westport, Connecticut: AVI Publ. Co, 1980.

Cita MLA (9th ed.)

Brown, E. Evan, i John B. Gratzek. Fish Farming Handbook Food, Bait, Tropicals and Goldfishes. AVI Publ. Co, 1980.