Knox, Cynthia. <br/><br/>
Pencil Drawing Step by Step: Master the art of drawing in graphite pencil (Artist's Library). 

 - 64  p. 
<br/><br/> Pencil Drawing Step by Step: Master the art of drawing in graphite pencil (Artist's Library) by Cynthia Knox (2014) 
<br/><br/><label>ISBN: </label>1600583695