SyGaco, Sonia B. <br/><br/>
Principles and competencies in purposive communication :  writing, speaking, and presenting to different audiences and for various purposes / 
Sonia B. SyGaco. 
 - Quezon City, Philippines :  Great Books Trading,  c2018. 
 - xiii, 197 p. ; 22 cm 
<br/><br/><label>ISBN: </label>978-971-9645-54-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication<br/>Purposive communication