Technical, business correspondence and research paper writing / 
Garcia, Cesar H. ; Barrientos, Romarico M. 
 - Manila :  ExcelPrint Services,  2015. 
 - 160 p. ; 25.3cm. 
<br/><br/><label>ISBN: </label>9786219503419 
<br/><br/><label>Dewey Class. No.: </label>Fil 808.066 G216 2015