Garrett, Mitchell B.
Appleton-Century-Crofts, , 1947
Buku Teks
edited by Norman F. Cantor and Samuel Berner
Thomas Y. Crowell, 1970
Buku Teks
White, James L., author
Washington Square Press, 1966
Buku Teks
Jackson, J. Hampden, author
Cambridge University Press, 1941
Buku Teks
Albrecht-Carrie, Rene, author
Littlefield, Adam & Co., 1959
Buku Teks