APA

Grey Z., . (1977). 30,000 on the hoof. New York: Pocket Books.

Chicago

Grey Zane, . 1977. 30,000 on the hoof. New York: Pocket Books.

Harvard

Grey Z., . (1977). 30,000 on the hoof. New York: Pocket Books.

MLA

Grey Zane, . 30,000 on the hoof. New York: Pocket Books. 1977.