Szymanski, R. A. (1990). Computers and Information Systems in Buisness. Merrill.
Dyfyniad Arddull ChicagoSzymanski, Robert A. Computers and Information Systems in Buisness. Columbus: Merrill, 1990.
Dyfyniad MLASzymanski, Robert A. Computers and Information Systems in Buisness. Merrill, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.