Tortora, Gerard J., author
Purdue University, 1998
Buku Teks
Tortora, Gerard J., author
Harper Collins, 1996
Buku Teks
Tortora, Gerard J., author
Harper Collins, 2006
Buku Teks
Tortora, Gerard J., author
John Wiley & Sons, 2011
Buku Teks
Tortora, Gerald J., author
Wiley, Hoboken, NJ., 2017
Buku Teks