@book{37441,
	author = {LAPA, NILTON, 1940},
	title = {TRIGONOMETRIA: TEORIA E 400 PROBLEMAS RESOLVIDOS},
	publisher = {NOBEL},
	year = {1971},
	address = {SAO PAULO},
	edition = {1 ed.},
	url = {https://www.santoandre.sp.gov.br/pesquisa/con_detalhe.asp?ID=47974&vHistoryNovo=sim}
}