Castle, D. (1974). Crativity: A tool Of Development In Business. St. Paul's Society.
Dyfyniad Arddull ChicagoCastle, Derek. Crativity: A Tool Of Development In Business. Allahabad: St. Paul's Society, 1974.
Dyfyniad MLACastle, Derek. Crativity: A Tool Of Development In Business. St. Paul's Society, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.