Cita APA (7th ed.)

Epstein, T. S., & Penny, D. H. (1972). Opportunity and response: Case studies in economic development. C. Hurst.

Cita Chicago (17th ed.)

Epstein, T. Scarlett, i David Harry Penny. Opportunity and Response: Case Studies in Economic Development. London,: C. Hurst, 1972.

Cita MLA (8th ed.)

Epstein, T. Scarlett, i David Harry Penny. Opportunity and Response: Case Studies in Economic Development. C. Hurst, 1972.