Sauvain, Harry C.
Prentice-Hall, 1959
Buku Teks
Chong, Yen Yee
John Wiley & Sons, 2004
Buku Teks
Cohen, Jerome B.
Richard D. Irwin, 1987
Buku Teks
Reilly, Frank K.
The Dryden Press, 1997
Buku Teks
Donelly, James H.
Business Publications, 1984
Buku Teks