Wheelen, Thomas L., author
Addison-Weley Publishing , 1990
Buku Teks
Pearce, John A., author
Irwin, 1988
Buku Teks
Pearce, John A., author
Irwin, 1991
Buku Teks
Pearce, John A., author
Irwin, 1997
Buku Teks
Wheelen, Thomas L., author
Prentice-Hall, 2002
Buku Referensi