Mathews, John Mabry
Appleton-Century Company, 1938
Buku Teks
edited by Ernest R. May
George-Braziller, 1963
Buku Teks
Coates, Benjamin Allen, author
Oxford University Press, 2016
eBooks
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