Ellis, Michael J., 1936- <br/><br/>
Why people play 
/ by M. J. Ellis 
 - Englewood Cliffs, N.J.  Prentice-Hall  1973 
 - xiv, 173 p. illus. 24 cm. 
<br/><br/>Bibliography: p. 149-160. 
<br/><br/><label>ISBN: </label>0139589910 
<br/><br/><label>LCCN: </label>72-006597 //r88 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Play--Psychological aspects<br/>Leisure<br/>Child psychology