Burns, James McGregor
Prentice-Hall, 1989
Buku Teks
Hasluck, Paul
Australian War Memorial, 1952
Buku Teks
Seckler-Hudson, Catheryn
United State Information Service, 1959
Buku Teks
The America University, [date of publication not identified]
Buku Teks
Ladd, Carll Everett
W.W. Norton , 1987
Buku Teks