edited by Paul Oliver
Cambridge University Press, 1998
Buku Referensi
Young, David, author
Periplus, 2004
Buku Teks
Muhammad Darullail, author
Fakultas Teknik Universitas Indonesia, 1997
UI - Skripsi (Membership)
editor, Maggie Toy
Academy Group, 1996
Buku Referensi
Myrtha Soeroto, author
Myrtle Publishing, 2007
Buku Teks