The wild canids  their systematics, behavioral ecology and evolution 
edited by M.W. Fox foreword by Konrad Lorenz 
 - New York  Van Nostrand  1975 
 - 508 p. : ill. ; 23 cm. 
 - Behavioral science series .
<br/><br/>p. 461-496 
<br/><br/><label>ISBN: </label>0442224303 
<br/><br/><label>LCCN: </label>74-023194 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Canidae