Universitas Indonesia, 2016
UI - Skripsi (Membership)
Nadhya Fadlillah, author
Universitas Indonesia, 2017
UI - Skripsi (Membership)
edited by Tom Sorell
Routledge, 1998
Buku Teks
International Labour Office, 1999
Buku Teks
Leida, Hansk K., author
ACTEX Publications, 2015
Buku Teks