Breckenridge, Marian E.
W.B. Saunders, 1949
Buku Teks
Garvey, George E., author
Greenwood Press, 1990
Buku Teks
Mukh. Imron Ali Mahmudi, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2021
UI - Tesis (Membership)
Nourse, Hugh O., author
McGraw-Hill, 1968
Buku Teks
Rosenthal, A.M., author
McGraw-Hill, 1964
Buku Teks