Gaya APA

Crockett, J, U. (1979). The Time-Life Enyclopedia of Gardening: Trees (Cet. 1). Canada: Time-Life Books Inc.

Gaya MLA

Crockett, James, Underwood. "The Time-Life Enyclopedia of Gardening: Trees". Cet. 1 Canada: Time-Life Books Inc, 1979. Text.