Walsh, Maximilian
Penguin Books, 1979
Buku Teks
Soemitro Djojohadikusumo, author
F.W Cheshire, 1968
Buku Teks
The Monthly Record,
Majalah, Jurnal, Buletin
Department of English, University of Queensland,
Majalah, Jurnal, Buletin
Australai : The Hawthorne Press
Majalah, Jurnal, Buletin