edited by John D. Greenwood
Cambridge University Press , 1991
Buku Teks
Friedenberg, Jay, author
Sage, 2006
Buku Teks
Sprintahall, Norman, author
McGraw-Hill , 1995
Buku Teks
Howes, Mary B., author
Academic Press, 2014
eBooks
Miller, George A. (George Armitage), 1920-2012, author
Harper & Row , 1962
Buku Teks