Tigor, Surawidjaja Nauli, author
Gramedia Pustaka Utama , 1992
Buku Teks
Nyhoff, Larry, author
Prentice-Hall, 1997
Buku Teks
Nolan, Richard L., author
Addison-Wesley, 1971
Buku Teks
Farrell, Barbara
John Wiley & Sons, 1993
Buku Teks
Ralston, Anthony, author
McGraw-Hill, 1971
Buku Teks