Παραπομπή APA
Irvin, G. (1978). Modern cost-benefit methods: An introduction to financial, economic, and social appraisal of development projects. London: Macmillan.
Παραπομπή Chicago StyleIrvin, George. Modern Cost-benefit Methods: An Introduction to Financial, Economic, and Social Appraisal of Development Projects. London: Macmillan, 1978.
Παραπομπή MLAIrvin, George. Modern Cost-benefit Methods: An Introduction to Financial, Economic, and Social Appraisal of Development Projects. London: Macmillan, 1978.
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