Bernard Elpetino Ibrahim
Fakultas Teknik Universitas Indonesia, 2014
UI - Skripsi (Membership)
Glassie, Henry H.
Indiana University Press, 2000
Buku Teks
editor, Maggie Toy
Academy Group, 1996
Buku Referensi
Gemala Dewi
Fakultas Teknik Universitas Indonesia, 2010
UI - Skripsi (Open)
edited by Paul Oliver
Cambridge University Press, 1998
Buku Referensi