Besavilla, Venancio I, Jr. Structural engineering and construction / Venancio I. Besavilla, Jr. - 4th edition, Volume 1. - Cebu City : VIB publisher, 1999. ISBN: 971-8510-70-2 Dewey Class. No.: Fil./Eng'g.Rev. 624.1' B554 1999 V1.4th ed.