Manwal sa korespondensya opisyal / 
Linangan ng mga Wika sa Pilipinas. 
 - Unang edisyon. 
 - Metro Manila :  National Book Store,  1990. 
 - xxvi, 364 pages :  black and white illustrations ;  23 cm.,  paperback. 
<br/><br/> Includes references. 
<br/><br/><label>ISBN: </label>8705031 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business letters.<br/>Commercial correspondence--Handbooks, manuals, etc.<br/> Letter writing (Filipino)--Handbooks, manuals, etc.<br/>Government correspondence--Handbooks, manuals, etc.--Philippines
<br/><br/><label>Dewey Class. No.: </label>FIL 383.122 M295 1990