Gaya APA

Crockett, J, U., Swanson, C, P. (1983). Lawns and ground cover . Virginia: Virginia: Time Life Books; 1983.

Gaya MLA

Crockett, James, Underwood., Swanson, Carl, P.. "Lawns and ground cover". Virginia: Virginia: Time Life Books; 1983, 1983. Text.