Gema Isnani, 2005
Majalah, Jurnal, Buletin
Hong Kong : Eastern Horizon Press
Majalah, Jurnal, Buletin
Geniusas, Saulius
Springer, 2012
eBooks
Jones, Becky
BBC Worldwide Limited, 2006
Multimedia
Stevenson, Juliet
BBC Worldwide Limited, 2002
Multimedia