Schubert, Glendon, author
Boston University Press, 1970
Buku Teks
edited by I. William Zartman and William Mark Habeeb
Westerview Press, 1993
Buku Teks
Gillispie, Charles Coulston, author
Princeton University Press, 1980
Buku Teks
Riggs, Fred W., author
East-West Center Press , 1967
Buku Teks
Ladd, Carll Everett
W.W. Norton , 1987
Buku Teks