APA (7th ed.) Citation

Hammack, S. P. (1997). Sire types for commercial beef herds. Texas Agricultural Extension Service, Texas A&M University System.

Chicago Style (17th ed.) Citation

Hammack, Stephen P. Sire Types for Commercial Beef Herds. College Station, Tex.: Texas Agricultural Extension Service, Texas A&M University System, 1997.

MLA (9th ed.) Citation

Hammack, Stephen P. Sire Types for Commercial Beef Herds. Texas Agricultural Extension Service, Texas A&M University System, 1997.