Ellis, Willis Davis <br/><br/>
A source book of gestalt psychology / 
by Willis D. Ellis 
 - London :  Routledge and Kegan Paul,  1950 
 - xiv, 403 p. ;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gestalt psychology