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Dyfyniad Arddull ChicagoScott, John Paul. Animal Behavior. 2nd ed., rev. Chicago: University of Chicago Press, 1972.
Dyfyniad MLAScott, John Paul. Animal Behavior. 2nd ed., rev. University of Chicago Press, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.