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Dyfyniad Arddull ChicagoJackson, John H., and Musslman. Business Contemporary Concepts and Practices: Contemporary Concepts and Practices. New Jersey: Prentice-Hall, 1987.
Dyfyniad MLAJackson, John H., and Musslman. Business Contemporary Concepts and Practices: Contemporary Concepts and Practices. Prentice-Hall, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.