Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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