Willson, J. D. (1989). Budgeting and profit planning manual (2nd ed.). Warren, Gorham & Lamont, Inc..
Dyfyniad Arddull ChicagoWillson, James D. Budgeting and Profit Planning Manual. 2nd ed. Boston: Warren, Gorham & Lamont, Inc., 1989.
Dyfyniad MLAWillson, James D. Budgeting and Profit Planning Manual. 2nd ed. Warren, Gorham & Lamont, Inc., 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.