@book{33150,
	author = {Sorokin, Pitirim Aleksandrovich },
	title = {Contemporary sociological theories through the first quarter of the twentieth century / },
	publisher = {Harper,},
	year = {1928, 1964.},
	address = {New York  :},
	note = {Oorspr. uitg.: Harper & Brothers, 1928. - (Harper social science series).}
}