Ehrmann, Henry W., author
Little, Brown & Co., 1968
Buku Teks
Bainville, J.
Paris: Fayard, 1924
Buku Teks
Luethy, Herbert, author
New York Merdian Books 1959
Buku Teks
Guerard, ALbert
Ann Arbor The University of Michigan 1959
Buku Teks
Wright, Vincent
New York Holmes [t.th.]
Buku Teks