The Potomac Institute, 1979
Buku Teks
American Institute of Certified Public Accounts, 1983
Buku Teks
Peng, Guangqian, author
China Intercontinental Press, 2004
Buku Teks
Beishline, John Robert, author
Prentice-Hall, 1957
Buku Teks
Oxford University Press, 1979
Buku Teks