Walker, W. A. (1951). Industrial internal auditing, by W. A. Walker and W. R. Dies. McGraw-Hill.
Dyfyniad Arddull ChicagoWalker, Wilbert Alden. Industrial Internal Auditing, by W. A. Walker and W. R. Dies. New york: McGraw-Hill, 1951.
Dyfyniad MLAWalker, Wilbert Alden. Industrial Internal Auditing, by W. A. Walker and W. R. Dies. McGraw-Hill, 1951.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.