Harris, Thorne D.
The legal guide to computer software protection: a practical handbook on copyrights, trademarks, publishing, and trade secrets
Prentice-Hall, 1984
 Buku Teks
National electrical code handbook
Mark W. Earley, Jeffrey S. Sargent, Joseph V. Sheehan, E. William Buss, editor
National Fire Protection Assosiation, 2008
 Buku Referensi
The national electrical code handbook
edited by Mark W. Earley, Richard H. Murray, John M. Caloggero
National Fire Protection Assoociation, 1989
 Buku Referensi
Meyer, Bertrand, 1950-
Object-oriented software construction
Prentice-Hall, 1988
 Buku Teks
Handbook of software quality assurance
edited by G. Gordon Schulmeyer and James I. McManus
Van Nostrand Reinhold, 1992
 Buku Referensi