APA (7th ed.) Citation

Porter, V. (1991). Cattle: A handbook to the breeds of the world (1. publ.). Helm.

Chicago Style (17th ed.) Citation

Porter, Valerie. Cattle: A Handbook to the Breeds of the World. 1. publ. London: Helm, 1991.

MLA (9th ed.) Citation

Porter, Valerie. Cattle: A Handbook to the Breeds of the World. 1. publ. Helm, 1991.

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