1416, 1959
Buku Teks
Westview Press , 1984
Buku Teks
McCormick, James M., author
Thomson, 2005
Buku Teks
edited by Richard P. Stebbins
Published for the Council on Foreign Relations by Simon and Schuster, [1939-1970], 1963
Buku Teks
edited by Richard P. Stebbins
American Book-stratford Press, 1963
Buku Teks