ISBN 978-621-8402-00-3 (EPUB) ISBN 978-621-8402-02-7 (PDF read only) ISBN 978-621-8402-03-4 (PDF downloadable) Author Richard D. Sanchez, Jamie A. Belz, Jonald B. Sia, Angeli Mae P. Sanchez, Angelyn M. Pangilinan, Jesus Jay D. Sanchez