American Heritage Publishing, 1961
Buku Teks
Driver, Harold E., author
University of Chicago Press, 1961
Buku Teks
Cardinal, Harold, author
Hurtig, 1977
Buku Teks
Michal, Jan M.
Stanford Univ. Press, 1960
Buku Teks
Blake, Robert R.
Gulf Pub. Co., Book Division, 1978
Buku Teks