By Giglioli, Pier Paolo, ed.
London : Penguin, 1976 .
399 p

By Waters, Frank.
New York : Ballantine Books, 1963 .
xxiii, 423 p. :

By Moore, Wilbert.
New Jersey : Prentice-Hall, 1963 .
120 p. :

By Babbie, Earl y otros | Glock, Charles, ed.
California : Wadsworth Publishing Company, 1973 .
ix, 315 p. :

By Kimball, Solon, ed | Watson, James, ed.
San Francisco : Chandler Publishing Company, 1972 .
xix, 306 p. :

By Nash, Manning.
.
viii, 166 p

By Spradley, James, ed.
.
400 p

By Marwick, Max editor.
.
416 p

By Hayes, Nelson, ed | Hayes, Tanya, ed.
.
xv, 264 p