Rio Tinto
Departemen Tenaga Kerja RI., 2002
Buku Teks
Yoza Wirsan Armanda, author
Fakultas Teknik Universitas Indonesia, 2006
UI - Tesis Membership
editor Guus Heerma van Voss, Surya Tjandra
Pustaka Laras, 2012
Buku Teks
Ahmad Jauhar, author
Universitas Indonesia, 2006
UI - Tesis Membership
Suyono Yahya, author
KOMNAS Perlindungan Anak, 2000
Buku Teks