Eberstadt, Nick Ed.)
Praeger Publishers, 1981
Buku Teks
Bauer, Peter T.
The University of Chicago Press, 1966
Buku Teks
Heller, Jack
The Law School of Harvard University, 1963
Buku Teks
Bray, Mark
The Commonwealth Secretariat, 1986
Buku Teks
Lipton, Michael, author
Yayasan Ilmu-Ilmu Sosial, 1980
Buku Teks