Epstein, T. S., & Penny, D. H. (1972). Opportunity and response: Case studies in economic development. C. Hurst.
Čikaški stil citiranja (17. izdanje)Epstein, T. Scarlett, i David Harry Penny. Opportunity and Response: Case Studies in Economic Development. London,: C. Hurst, 1972.
MLA način citiranja (8. izdanje)Epstein, T. Scarlett, i David Harry Penny. Opportunity and Response: Case Studies in Economic Development. C. Hurst, 1972.
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