De Guzman, Maria Odulio <br/><br/>Model Letters for All Occasions, Sentence Stress, and Emphasis  -- Manila:  G.O.T. Publishers,  1973.  <br/><br/><label>ISBN: </label>9710813773 <br/><br/><label>Dewey Class. No.: </label>GS Fil 808.86 G93 2003