HOFEDITZ, C. (1979). EASY TO LEARN COMPUTERS AND DATA PROCESSING. VALCO PUB. CO.
Dyfyniad Arddull ChicagoHOFEDITZ, C.A. EASY TO LEARN COMPUTERS AND DATA PROCESSING. NEW YORK: VALCO PUB. CO, 1979.
Dyfyniad MLAHOFEDITZ, C.A. EASY TO LEARN COMPUTERS AND DATA PROCESSING. VALCO PUB. CO, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.