@book{48783,
	author = {MANN, PETER H. and VELHO, OCTAVIO ALVES},
	title = {METODOS DE INVESTIGACAO SOCIOLOGICA},
	publisher = {ZAHAR},
	year = {1973},
	address = {RIO DE JANEIRO},
	edition = {2 ed.},
	url = {https://www.santoandre.sp.gov.br/pesquisa/con_detalhe.asp?ID=61077&vHistoryNovo=sim}
}