Bovee, Courtland L., author
Prentice-Hall, 2000
Buku Teks
Bovee, Courtland L., author
Pearson, 2016
Buku Teks
edited by Robert M. Bohm
CRC Pres, 2008
Buku Teks
Federico, Ronald C., author
McGraw-Hill, 1990
Buku Teks
Baldwin, J., author
John Wiley & Sons, 1996
Buku Teks