Webb, Leicester, author
F.W. Cheshire, 1954
Buku Teks
Hamilton, Feona J., author
Gower, 1996
Buku Teks
Chevron IndoAsia Bussiness Unit, 2007
Majalah, Jurnal, Buletin
edited Elliot D. Cohen
Prometheus Books, 2005
Buku Teks
Jakarta : The Cultural and Information office of embassy of the Republic of China in Indonesia
Majalah, Jurnal, Buletin