Charles, Curtis B.
John Wiley & Sons, 1996
Buku Teks
Spaulding, Margaret, 1943-
McGraw-Hill, 1989
Buku Teks
Pressman, Andy
Wiley, 2006
Buku Teks
Nelson, Charles
McGraw-Hill , 1995
Buku Teks
Demkin, Joseph A., editor
John Wiley & Sons, 2001
Buku Referensi