Barwig, Susan, and Brenda Abbott. The German Shepherd Book. Wheatridge, Colo.: Hoflin Publications, 1987.
Bergman, Goran. Why Does Your Dog Do That? New York: Howell Book House, 1973.
Campbell, William. Behavior Problems in Dogs. Santa Barbara, Calif.: American Veterinary Publications, 1975.
Davis, Wilson. Go Find: Training Your Dog to Track. New York: Howell Book House, n.d.
Fox, Michael. Behavior of Wolves and Related Canids. New York: Harper & Row, 1971.
Goldbecker, William, and Ernest Hart. This is the German Shepherd. Jersey City, N.J.: TFH Publications, 1957.
Johnson, Glen. Tracking Dog: Theory and Methods. Rome, New York: Amer Publication, 1975.
Koehler, William. The Koehler Method of Guard Dog Training. New York: Howell Book House, 1962.
Most, Colonel Konrad. Training Dogs—A Manual. London: Popular Dogs Publishing Co., 1951.
Pearsall, Milo, and Hugo Verbruggen. Scent: Training to Track, Search, and Rescue. Loveland, Colo.: Alpine Publications, 1982.
Pfaffenberger, Clarence. The New Knowledge of Dog Behavior. New York: Howell Book House, 1963.
Saunders, Blanche. The Complete Book of Dog Obedience. New York: Howell Book House, 1980.
Schneider-Leyer, Erich. Der Deutsche Schäferhund. Stuttgart: Verlag Eugen Ulmer, n.d.
Scott, John Paul, and John Fuller. Dog Behavior: The Genetic Basis. Chicago: University of Chicago Press, 1965.
von Stephanitz, Max. The German Shepherd Dog in Word and Picture. American edition revised from the original German work by J. Schwabacher, originally published in 1923.
Strickland, Winifred, and James Moses. The German Shepherd Today. New York: Macmillan, 1988.