@inbook {,
	title = {The social context of production and exchange},
	booktitle = {Contexts for prehistoric exchange},
	year = {1982},
	note = {Source of data: Anthropological Literature, Harvard University},
	pages = {173-197},
	publisher = {New York : Academic Press, c1982},
	organization = {New York : Academic Press, c1982},
	keywords = {Archaeology--Commerce, Ontario--Archaeology--Commerce, Teotihuacan--Archaeology--Commerce},
	author = {Spence, Michael W.}
}