Kaiser, Edward John, author
University of Illinois Press, 1995
Buku Teks
US Government Printing Office, 1968
Buku Teks
Simon & Schuster, 1995
Buku Teks
Walker, Samuel, author
Cambridge Univ Press, 2012
Buku Teks
Corwin, Edward S., author
New York University Press, 1957
Buku Teks