Schlesinger, Rudolf B.
The Foundation Press, Inc., 1959
Buku Klasik
Schlesinger, Rudolf B.
The Foundation Press, 1950
Buku Klasik
Schlesinger, Rudolf B.
Stevens & Sons , 1960
Buku Klasik
edited by Rudolf Schlesinger
Foundation Press, 1959
Buku Teks
Eder, Phanor J., author
New York University press, 1950
Buku Teks