Nickel, James W., author
Blackwell , 2007
Buku Teks
Smith, Rhona K., author
Routledge, 2010
Buku Teks
Forsythe, David P., 1941-, author
University of Nebraska Press, 1983
Buku Teks
Cassesse, Antonio, author
Yayasan Obor Indonesia , 1993-1994
Buku Teks
edited by Sir Francis Vallat
Europa Publications, 1970
Buku Teks