Castle, D. (1974). Crativity: A tool Of Development In Business. St. Paul's Society.
Čikaški stil citiranjaCastle, Derek. Crativity: A Tool Of Development In Business. Allahabad: St. Paul's Society, 1974.
MLA način citiranjaCastle, Derek. Crativity: A Tool Of Development In Business. St. Paul's Society, 1974.
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