Lynne Rienner Publisher, Inc, 1986
Buku Teks
Carter, Gwendolen M., author
Frederick A. Praeger, 1961
Buku Teks
edited by Calvin W. Stillman
University of Chicago Press, 1955
Buku Teks
Bayart, Jean-Francois, author
Longman, 1993
Buku Teks
Maguire, Keith, author
Chambers, 1991
Buku Teks