@book{33737,
	author = {Demana, Franklin D.},
	title = {Matemáticas universitarias introductorias con nivelador mymathlab tutor interactivo online/},
	publisher = {Pearson educación},
	year = {2009},
	address = {México},
	note = {traducido de Precalculus : graphical, numerical, algebraic}
}