Clark, F. J. (1972). Business systems and data processing procedures / F. J. Clark, Ronald Gale [and] Robert Gray. Prentice-Hall.
Dyfyniad Arddull ChicagoClark, Frank James. Business Systems and Data Processing Procedures / F. J. Clark, Ronald Gale [and] Robert Gray. Englewood Cliffs, N. J: Prentice-Hall, 1972.
Dyfyniad MLAClark, Frank James. Business Systems and Data Processing Procedures / F. J. Clark, Ronald Gale [and] Robert Gray. Prentice-Hall, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.