edited by Martin Kriesberg
Brooking Institute, 1966
Buku Teks
Atkinson, Brian, author
Addison - Wesley , 1998
Buku Teks
Hornby, Win, author
Prentice-Hall, 2001
Buku Teks
Nafziger, E. Wayne, author
Prentice-Hall, 1990
Buku Teks
Myint, Hla, author
Hutchinson University Library, 1973
Buku Teks