Buss, Claude Albert, author
Mamillan, 1955
Buku Teks
Clyde, Paul H. (Paul Hibbert), author
Prentice-Hall, 1953
Buku Teks
Clyde, Paul H. (Paul Hibbert), author
Prentice-Hall, 1966
Buku Teks
Walker, Allan S., author
Australian War Memorial, 1956
Buku Teks
Christopher, James W., author
E.J. Brill, 1928
Buku Teks