APA

Perry J., . (1969). The world's a zoo. New York: Dodd, Mead.

Chicago

Perry John, . 1969. The world's a zoo. New York: Dodd, Mead.

Harvard

Perry J., . (1969). The world's a zoo. New York: Dodd, Mead.

MLA

Perry John, . The world's a zoo. New York: Dodd, Mead. 1969.