APA (7th ed.) Citation

Hartley Edwards, E., & Langrish, B. (1991). The ultimate horse book (1st American ed.). Dorling Kindersley.

Chicago Style (17th ed.) Citation

Hartley Edwards, Elwyn, and Bob Langrish. The Ultimate Horse Book. 1st American ed. New York: Dorling Kindersley, 1991.

MLA (9th ed.) Citation

Hartley Edwards, Elwyn, and Bob Langrish. The Ultimate Horse Book. 1st American ed. Dorling Kindersley, 1991.