Kraig Knutson, Clifford J. Schexnayder, Christine Fiori, Richard E. Mayo
McGraw-Hill, 2009
Buku Teks
Pilcher, Roy, author
McGraw-Hill, 1976
Buku Teks
Clough, Richard Hudson, author
John Wiley & Sons, 2000
Buku Teks
Jackson, Barbara J., author
Wiley Publishing, 2010
Buku Teks
Reiner, Laurence E., author
Prentice-Hall, 1972
Buku Referensi