@book{1990,
	author = {Creswick Morey, Nancy Kathleen},
	title = {Ethnohistory of the Colombian and Venezuelan Llanos /},
	publisher = {Univrsity Utah,},
	year = {1975.},
	address = {Utah :},
	note = {Tesis (Doctorado en Filosofia) Universidad de Utah. Departament of Antropology. Doctor of Philosophy.}
}