Mochammad Rizcky Pramonanda,author
2016
UI - Skripsi (Membership)
Simon & Schuster, 1997
Buku Teks
edited by Marshall W. Raffel
The Pennsylvania State University, 1984
Buku Teks
Novi Noviani, author
2018
UI - Skripsi (Membership)
Roemer, Milton I., author
ILO, 1969
Buku Teks