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Beef Cattle by A. L. Neumann and Keith S. Lusby, 8th edition, 1986, John Wiley and Sons, New York, NY.
Beef Cattle Production: An Integrated Approach by Verl M. Thomas, 1992, Waveland Press, Prospect Heights, IL.
Animal Science by James R. Gillespie, 1998, Delmar Publishers, Albany, NY
Pathways to Pregnancy and Parturition by P. L. Senger, 2nd edition, 2005, Current Conceptions Inc., Pullman, WA.
Animal Sciences: The Biology, Care and Production of Domestic Animals by John Campbell, 4th edition, 2002, McGraw Hill, New York, NY.
Texas Cooperative Extension, 2005, Texas Beef Cattle Management Handbook, Texas A&M University System, College Station, TX.
Beef Cattle Production by Danny D. Simms, 2013, SMS Publishing, Amarillo, TX