Zagoria, Donald S., author
Pegasus , 1967
Buku Teks
Kahin, George McTurnan, author
A Delta Book, 1967
Buku Teks
Kahin, George McTurnan, author
Dial Press , 1967
Buku Teks
Higgins, Hugh, author
Heinemann Educational, 1975
Buku Teks
edited by P.J. Honey
Praeger, 1962
Buku Teks