OECD, 1993
Buku Teks
technical editors, Pok Soy Yoong, Ng Keat Seng, Steven M. Timms
Lexis Nexis, 2011
Buku Referensi
Dubin, Jeffrey A., author
Springer, 2012
eBooks
International Monetary Fund, 1998
Buku Teks
R. Mansury, author
Asian-Pasific Tax and Investment Research Centre, 1992
Buku Teks