Perry,William E. (1985). Data processing budgets: How to develop and use budgets effectively (management perspective). Prentice Hall.
Dyfyniad Arddull ChicagoPerry,William E. Data Processing Budgets: How to Develop and Use Budgets Effectively (management Perspective). New Jersey: Prentice Hall, 1985.
Dyfyniad MLAPerry,William E. Data Processing Budgets: How to Develop and Use Budgets Effectively (management Perspective). Prentice Hall, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.