APA استشهاد

Brown, E. E., & Gratzek, J. B. (1980). Fish farming handbook: Food,Bait,Tropicals and Goldfish. AVI Pub. Co..

استشهاد بنمط شيكاغو

Brown, E. Evan, و John B. Gratzek. Fish Farming Handbook: Food,Bait,Tropicals and Goldfish. Westport, Conn.: AVI Pub. Co., 1980.

MLA استشهاد

Brown, E. Evan, و John B. Gratzek. Fish Farming Handbook: Food,Bait,Tropicals and Goldfish. AVI Pub. Co., 1980.