R. F. Cooke,
“Basics of Reproductive Function in Beef Cows”, OSU Beef Cattle Sciences/Beef Cattle Library: BEEF004, 2009.
R. F. Cooke, Estill, C. T., and Villarroel, A.,
“Calving School Handbook”. OSU Beef Cattle Sciences/Calving School Handbook: BEEF020, 2009.
R. F. Cooke,
“Temperament and Performance of Beef Cattle”. OSU Beef Cattle Sciences/Beef Cattle Library: BEEF021, 2009.