Brown, Edward, et. al. "CS 1700 On-line Textbook". http://www.cs.mun.ca/~rhewitt/makenote/makenote.html (Aug. 1995)
Carey, Pete. "Breakthrough made on new era of computing. Quantum computing takes a huge step". San Jose Mercury News, 3/28/98, pp. 1A, 5A
Castle image on Table of Contents page courtesy Castle Computers, http://www.castlec.com/index.html, permission given August 1998 via e-mail
Concept and clues for logic puzzles courtesy Kim and Wendy Noyes, August 1998
Foxton, B.N.T. and Thewlis, P.J. From Logic to Computers. Boston: Blackwell Scientific Publications, 1983; pg 42.
Image of logic puzzle grid courtesy "What Ho! A Logic Challenge Archive!" http://compassnet.com/aussie/logarc.htm, Aussie Meyer, email@example.com, August 1998, e-mail.
Lam, David, et. al. "DIGital: An Online Digital Circuitry Course". http://tqd.advanced.org/2723/ (1997?)
Wu, Corrina. "Bacteria give new meaning to 'computer bug'". Science News Online.
http://www.sciencenews.org/sn_arc97/3_8_97/fob2.htm (Mar. 1997)