edited by W. Ladd Hollist
Westview Press, 1985
Buku Teks
edited by John Ravenhil
Oxford University Press, 2014
Buku Teks
Stanford University Press, 1988
Buku Teks
Gilpin, Robert, author
Princeton University Press, 1987
Buku Teks
Oatley, Thomas, author
Pearson, 2012
Buku Teks