Edge, C. Geoffrey
The Society of Management Accountant of Canada , 1981
Buku Teks
Tan, Chwee Huat
Saw Centre Financial Studies, NUS Business School, 2007
Buku Teks
Lincoln, W. Bruce
Chandler Publishing Company, 1968
Buku Teks
Lincoln, W. Bruce
Anchor Books, 1987
Buku Teks
Noland, Marcus
Institute for International economics , 1996
Buku Teks