Rothman, Jack
Columbia University Press, 1974
Buku Teks
McAlevey, Jane F.
Oxford University Press, 2016
eBooks
Rubin, Herbert J.
Macmillan, 1992
Buku Teks
edited by Mayer N. Zald
Quadrangle Books, 1967
Buku Teks
Schaller, Lyle E.
Abingdon Press, 1966
Buku Teks