Fulcher, James, author
Oxford University Press, 2007
Buku Teks
Lapiere, Richard T., author
McGraw-Hill, 1946
Buku Teks
Dorsey Press, 1962
Buku Teks
edited by Donald McLean
Angus and Robertson, 1969
Buku Teks
Jeanne H. Ballantine, Joan Z. Spade, editors
SAGE Publications, 2015
Buku Teks