Ruby, Lionel, <br/><br/>
Belajar berpikir logis (the art of making sense) / 
Dr. Lionel Ruby. 
 - 200 pages ;   21 cm. 
<br/><br/><label>ISBN: </label> Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic.