Donnelly, Daniel
Rockport Publishers, 2011
Multimedia
Paulus Winarno, author
Gramedia, 2005
Buku Teks
Kinsella, Sophie, author
Gramedia Pustaka Utama, 2003
Buku Teks
Korea Overseas Information Service, 2003
Multimedia
Sternberg, Robert J., author
APA, 2000
Buku Teks