Reshetar, JR, John S.
Priceton University Press, 1952.
Buku Teks
Amstrong, John A.
Colombia University Press, 1963
Buku Teks
Kahin, George McTurnan, author
Cornell University Press, 1952
Buku Teks
Kahin, George McTurnan, author
Cornell University Press, 1952
Buku Teks
Kahin, George McTurnan, author
Cornell University Press , 1952
Buku Teks