Elbing, A. O. (1967). The value issue of business. New York: McGraw-Hill.
Dyfyniad Arddull ChicagoElbing, Alvar O. The Value Issue of Business. New York: McGraw-Hill, 1967.
Dyfyniad MLAElbing, Alvar O. The Value Issue of Business. New York: McGraw-Hill, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.