參考書目
Fogle, Bruce. The New Encyclopedia of the Dog. Dorling Kindersley, 2000.
Morey, Darcy F. "The Early Evolution of the Domestic Dog." American Scientist (July/August 1994), 336-347.Sheldon, Jennifer W.
Wild Dogs: The Natural History of the Nondomestic Canidae. Academic Press, 1992.
Thurston, Mary Elizabeth. The Lost History of the Canine Race. Andrews and McMeel, 1996.
Olsen, Stanley J. Origins of the Domestic Dog. University of Arizona Press, 1985.
國家地理學會資源
Foster, Joanna. Dogs Working for People. National Geographic Books, 1972.
Linehan, Edward J. "Dogs Work for Man: Intelligent and Eager, Man's Oldest Friend Learns New Ways to Catch Thieves, Find the Lost, and Master Other Tricky Tasks," National Geographic (August 1958), 190-233.