Poryk, M. K. (1983). Word Processing and Information Systems: Practical Approach to Concepts. New York: McGraw-Hill.
Dyfyniad Arddull ChicagoPoryk, Marilyn K. Word Processing and Information Systems: Practical Approach to Concepts. New York: McGraw-Hill, 1983.
Dyfyniad MLAPoryk, Marilyn K. Word Processing and Information Systems: Practical Approach to Concepts. New York: McGraw-Hill, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.