Calalang, Bayani Antonio <br/><br/>
To be logical 

 - Madaluyong City  Books Atbp.  2012 
 - 147 
<br/><br/><label>ISBN: </label>971-0412-15-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic
<br/><br/><label>LC Class. No.: </label>C Fil. BC 71 C156 2011