@book {,
	title = {Excavations at Tiahuanaco},
	year = {1934},
	note = {by W. C. Bennett.illus., fold. plan. 25 cm.pp426-459 cited by Burger and asaro 1977 for Tiwanaku beakers with black-tipped points depicted},
	pages = {494},
	publisher = {American Museum of Natural History},
	organization = {American Museum of Natural History},
	address = {New York},
	keywords = {Indian pottery South America., Indians of South America Bolivia Antiquities., Tiwanaku Site (Bolivia)},
	author = {Bennett, Wendell C.}
}