Schlesinger, Rudolf B.
The Foundation Press, Inc., 1959
Buku Klasik
Hall, Jerome, author
Louisiana State University Press, 1963
Buku Klasik
Erades, Judge
Martinus Nijhoff Publishers, 1983
Buku Teks
edited by Rudolf Schlesinger
Foundation Press, 1959
Buku Teks
St,Paul,Minn, 1994
Buku Teks