Hutchins, Greg, author
Oliver Wright Publications, 1994
Buku Referensi
Rothery, Brian, author
Pustaka Binaman Pressindo, 1996
Buku Teks
Goetsch, David L., author
Prentice-Hall, 2002
Buku Teks
Lam, Siew Wah, author
McGraw-Hill, 1994
Buku Teks
Nee, Paul A.
John Wiley & Sons, 1996
Buku Teks