Clark, N., & Juma, C. (1987). Long-run economics: An evolutionary approach to economic growth. Pinter Publishers Limited.
Chicago-viite (17. p.)Clark, Norman, ja Calestous Juma. Long-run Economics: An Evolutionary Approach to Economic Growth. London: Pinter Publishers Limited, 1987.
MLA-viite (9. p.)Clark, Norman, ja Calestous Juma. Long-run Economics: An Evolutionary Approach to Economic Growth. Pinter Publishers Limited, 1987.
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