APA (7th ed.) Citation

Hopf, A. L. (1977). Wild cousins of the horse. Putnam.

Chicago Style (17th ed.) Citation

Hopf, Alice Lightner. Wild Cousins of the Horse. New York: Putnam, 1977.

MLA (8th ed.) Citation

Hopf, Alice Lightner. Wild Cousins of the Horse. Putnam, 1977.

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