Frison, G. C. (2004). Survival by hunting: Prehistoric human predators and animal prey. University of California Press.
Dyfyniad Arddull ChicagoFrison, George C. Survival by Hunting: Prehistoric Human Predators and Animal Prey. Berkeley: University of California Press, 2004.
Dyfyniad MLAFrison, George C. Survival by Hunting: Prehistoric Human Predators and Animal Prey. University of California Press, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.