Ferguson,Nail. (2013). The Great Degeneration: How Institutions Decay and Economies Die. Penguin press.
Chicago-viite (17. p.)Ferguson,Nail. The Great Degeneration: How Institutions Decay and Economies Die. New York: Penguin press, 2013.
MLA-viite (9. p.)Ferguson,Nail. The Great Degeneration: How Institutions Decay and Economies Die. Penguin press, 2013.
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