Slater, R. (2003). 29 leadership secrets from Jack Welch (2nd ed.). McGraw-Hill.
Dyfyniad Arddull ChicagoSlater, Robert. 29 Leadership Secrets from Jack Welch. 2nd ed. New York: McGraw-Hill, 2003.
Dyfyniad MLASlater, Robert. 29 Leadership Secrets from Jack Welch. 2nd ed. McGraw-Hill, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.