APA (7th ed.) Citation

Macgregor, C. A. (1989). Directory of feeds & feed ingredients. W.D. Hoard.

Chicago Style (17th ed.) Citation

Macgregor, Charles A. Directory of Feeds & Feed Ingredients. Fort Atkinson, Wis.: W.D. Hoard, 1989.

MLA (9th ed.) Citation

Macgregor, Charles A. Directory of Feeds & Feed Ingredients. W.D. Hoard, 1989.