McConnell, Kenneth G.
John Wiley & Sons, 2008
Buku Teks
Jackson, Charles
Gulf Pub. Co., Book Division, 1979
Buku Teks
Thomson, William Tyrrell
Prentice-Hall, 1979
Buku Teks
Thomson, William Tyrrell
Prentice-Hall, 1982
Buku Teks
Inman, Daniel J.
Prentice-Hall, 1996
Buku Teks