@book{1171,
	author = {Klopfer, Peter H.},
	title = {Introducción al comportamiento animal},
	publisher = {Fondo de Cultura Económica,},
	year = {1980},
	series = {Breviarios},
	address = {México, D. F. :},
	note = {Trad. de : An introduction to animal behavior, 2 ed. 1974}
}