APA Style

Valdez, S, F., B., D, C, R. (2013). Essentials of oral communication towards effective and responsible speech . : Purely Books Trading & Publishing Corp..

MLA Style

Valdez, Suzzette, F.., B., Dela, Cruz,, Rommel. "Essentials of oral communication towards effective and responsible speech". : Purely Books Trading & Publishing Corp., 2013. Text.