Koepke, C. A. (1961). Plant production control/3e (3rd ed.). John wiley & Sons.
Dyfyniad Arddull ChicagoKoepke, Charles A. Plant Production Control/3e. 3rd ed. New York: John wiley & Sons, 1961.
Dyfyniad MLAKoepke, Charles A. Plant Production Control/3e. 3rd ed. John wiley & Sons, 1961.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.