Jordan, Glenn, author
Blackwell, 1997
Buku Teks
edited and with an introduction by Andrew W. Lind
University of Hawaii Press, 1955
Buku Teks
Healey, Joseph F., 1945-, author
Pine Forge Press, 2007
Buku Teks
Healey, Joseph F., 1945-, author
Sage, 2012
Buku Teks
Sassower, Raphael
Routledge, 1995
Buku Teks