Poortenaar, Jan. <br/><br/>
The art of the book and its illustration / 
by Jan Poortenaar ; with a chapter by Maurits Sabbe and a foreword by C.H. St J. Hornby. 
 - London :  Harrap,  1935. 
 - xii,182p, plates :  ill. (some col.) ;  28 cm. 
<br/><br/> Includes index.