@book{9529,
	author = {Villar, Rhodora Rodriquez and Felicisima H. Ramos},
	title = {Cooperative learning approach its effects on the mathematical achievement and attitudes of selected grade six pupils in Masville Elementary School, Paranaque-Las Pinas Division/},
	publisher = {Olivarez College,},
	year = {1997.},
	address = {Parañaque City:}
}