Παραπομπή APA
Samuels, W. J., & Tool, M. R. (1989). The Methodology of economic thought (2nd ed.-.). New Brunswick: Transaction.
Παραπομπή Chicago StyleSamuels, Warren J., and Marc R. Tool. The Methodology of Economic Thought. 2nd ed.-. New Brunswick: Transaction, 1989.
Παραπομπή MLASamuels, Warren J., and Marc R. Tool. The Methodology of Economic Thought. 2nd ed.-. New Brunswick: Transaction, 1989.
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