Andri Ramawan Adipura, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
UI - Skripsi (Membership)
Tarigan, Elsa Natasia Br., author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2021
UI - Skripsi (Membership)
Nash, Rederick Frazier, author
University of Wisconsin Press, 1989
Buku Teks
Cunningham, William P., author
McGraw-Hill, Higher Education, 2009
Buku Teks
Cunningham, William P., author
McGraw-Hill, 2002
Buku Teks