Gaya APA

Cravens, R, H. (1983). The Time-Life Encyclopedia of Gardening: Pets and Diseases (Cet. 3). Canada: Time-Life Books Inc.

Gaya MLA

Cravens, Richard, H.. "The Time-Life Encyclopedia of Gardening: Pets and Diseases". Cet. 3 Canada: Time-Life Books Inc, 1983. Text.