Dela Cruz, Perla S. , Analytic geometry / Perla S. Dela Cruz, Lea D. Maderal, Ma. Theresa Christine C. Valdez. - Quezon City: : C & E Publishing , Inc. , 2012. - ix, 400 pages : black and white illustrations, figures, tables; 25 cm. includes index. English ISBN: 9789719968436 Subjects--Topical Terms: Analytic geometry. Dewey Class. No.: 516.3 / DC37