Clarita G. Javier, Josefina A. Decena, and Angelina P. Resurreccion Sining ng Kasanayan sa Pakikipagtalastasan - Books Atbp. Publishing Corp. 2005 Includes Talasanggunian ISBN: 971-0388-10-X Dewey Class. No.: Fil. 499.211 J32 2003