Thompson, W. Scott (Willard Scott), 1942-, author
University of Queensland Press, 1977
Buku Teks
Weller, Patrick
Penguin Books Australia Ltd, 1989
Buku Teks
New York Grotius Publication, 1994
Buku Teks
Artikel Jurnal
Stowe, Keith S., 1943-
John Wiley & Sons, 1979
Buku Teks