@inbook {,
	title = {Risk, reciprocity and social influences on !Kung San economics},
	booktitle = {Politics and history in band societies},
	year = {1982},
	pages = {61-84},
	publisher = {Cambridge University Press},
	organization = {Cambridge University Press},
	address = {Cambridge},
	author = {Wiessner, Polly},
	editor = {Leacock, E. and Lee, R. B.}
}