APA (7th ed.) Citation

Campbell. (1975). The World of the horse. Octopus Books.

Chicago Style (17th ed.) Citation

Campbell. The World of the Horse. [s.l: Octopus Books, 1975.

MLA (8th ed.) Citation

Campbell. The World of the Horse. Octopus Books, 1975.

Warning: These citations may not always be 100% accurate.