@book{51426,
	author = {Young, Pauline Vislick and Schmid, Calvin Fisher},
	title = {Scientific social surveys and research},
	publisher = {Prentice-Hall},
	year = {1949.},
	series = {Prentice-Hall sociology series},
	address = {New York},
	edition = {2. ed.},
	note = {Includes indexes.}
}