Norton, P. (1997). Introduction to Computers. New York: McGraw-Hill.
Dyfyniad Arddull ChicagoNorton, Peter. Introduction to Computers. New York: McGraw-Hill, 1997.
Dyfyniad MLANorton, Peter. Introduction to Computers. New York: McGraw-Hill, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.