Matchinske, Megan, author
Cambridge University Press, 1998
eBooks
Tiara Chandrasari, author
2008
UI - Skripsi (Open)
[publisher not identified], [date of publication not identified]
Naskah
Johan Meuleman
INIS, 2001
Buku Teks
Annisa Seffiliya, author
Fakultas Teknik Universitas Indonesia, 2010
UI - Skripsi (Open)