Sydney : Sydney University Press
Majalah, Jurnal, Buletin
Queensland : The University of Queensland Press, 1985
Majalah, Jurnal, Buletin
Australia : University of Melbourne
Majalah, Jurnal, Buletin
Taiwan : Kwang Hwa Publishing (USA), Inc
Majalah, Jurnal, Buletin
Ekelund, Robert B., Jr.
New York McGraw Hill 1997,
Buku Teks