Bonghanoy G. B., . (2016). Pre-Calculus for Senior High School. Malabon City: Mutya Pub.
Bonghanoy Guillermo B, . 2016. Pre-Calculus for Senior High School. Malabon City: Mutya Pub.
Bonghanoy Guillermo B, . Pre-Calculus for Senior High School. Malabon City: Mutya Pub. 2016.