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Dyfyniad Arddull ChicagoEffron, Marc [ed.], Robert Gandossy [ed.], and Marshall Goldsmith [ed.]. Human Resources in the 21st Century. New Jersey: John Wiley and sons, 2003.
Dyfyniad MLAEffron, Marc [ed.], et al. Human Resources in the 21st Century. John Wiley and sons, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.