Van den Berghe, P. L. (1973). Age and sex in human societies: A biosocial perspective. Wadsworth.
Dyfyniad Arddull ChicagoVan den Berghe, Pierre L. Age and Sex in Human Societies: A Biosocial Perspective. California: Wadsworth, 1973.
Dyfyniad MLAVan den Berghe, Pierre L. Age and Sex in Human Societies: A Biosocial Perspective. Wadsworth, 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.