(2002). Business: The ultimate resource. A&C black publishers.
Dyfyniad Arddull ChicagoBusiness: The Ultimate Resource. London: A&C black publishers, 2002.
Dyfyniad MLABusiness: The Ultimate Resource. A&C black publishers, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.