Brooker, Graeme
RotoVision SA, 2010
Buku Teks
Ayu Putri Fadhilah
2014
UI - Skripsi (Membership)
Ganderton, Lucinda
Hongkong : Page One Publishing, 2002,
Buku Referensi
Ganderton, Lucinda
Page One, 2002
Buku Referensi
Bliss, Sara
Page One Publishing, 2003
Buku Referensi