Social research ethics :  an examination of the merits of covert participant observation / 
edited by Martin Bulmer 
 - London :  Macmillan,  1982 . 
 - xiv, 284 p. ;  23 cm 
<br/><br/> Bibliography: p.252-258 
<br/><br/><label>ISBN: </label>0333291980 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Participant observation--Moral and ethical aspects
<br/><br/><label>LC Class. No.: </label>H62