@book{9921,
	author = {Cueno, Anthony and Acob, Marjo-Anne / author; Cortez, Mark Jayson / author; Domingo, Alleli Ester C. /author.},
	title = {Pre-calculus for senior high school /},
	publisher = {C & E Publishing, Inc.,},
	year = {2016.},
	address = {Quezon City :}
}