Norwich : Edward Arnold, The educationl, academic and medical publishing
Majalah, Jurnal, Buletin
Australai : The Hawthorne Press
Majalah, Jurnal, Buletin
Hardisty, David
Oxford Oxford University Press 1989
Buku Teks
Dany, Max, author
Vanves, Paris Hachette 1989
Buku Teks
Hachette, 1983
Buku Teks