Kelley, Donald, author
Hardcourt Brace College Publisher, 1999
Buku Teks
Rauch, Georg von, author
Frederick A. Preager , 1957
Buku Teks
Bailey, Thomas Andrew, 1902-1983, author
Cornell University Press, 1950
Buku Teks
Rauch, Georg von, author
Frederick A. Praeger, 1962
Buku Teks
Dallin, David J., author
Yale University Press, 1956
Buku Teks