League of Women Voters of the United States 1961, 1962
Buku Teks
edited by Robert W. Tucker, Charles B. Keely, and Linda Wrigley
Westview Press, 1990
Buku Teks
Dessy Raufiana Pramita, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2014
UI - Skripsi Membership
Hutchinson, Harry D., author
Meredith Corporation, 1971
Buku Teks
Hutchinson, Harry D., author
Appleton-Century-Crofts, 1967
Buku Teks