Davis, Gordon B., author
Barron's Educational Series, 1979
Buku Teks
Kakonis, Tom E.
McGraw-Hill, 1978
Buku Teks
Daniel, Carter A., author
McGraw-Hill, 2012
Buku Teks
Modern Business reports, 1987
Buku Teks
Goddard, Ken, author
The Bath Press, 1995
Buku Teks