Kaufman, A. S., & Morgenthau, H. J. (1968). The radical liberal: New man in American politics / Arnold S. Kaufman. Forew. by Hans J. Morgenthau. Simon and Schuster.
Lua i Stíl Chicago (17ú heag.)Kaufman, Arnold S., agus Hans J. Morgenthau. The Radical Liberal: New Man in American Politics / Arnold S. Kaufman. Forew. by Hans J. Morgenthau. New York: Simon and Schuster, 1968.
Lua MLA (8ú heag.)Kaufman, Arnold S., agus Hans J. Morgenthau. The Radical Liberal: New Man in American Politics / Arnold S. Kaufman. Forew. by Hans J. Morgenthau. Simon and Schuster, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.