HAVENS, R. (1966). Economics: Principles of income, prices and. Macinillan.
Tohutoru Kātū Chicago (17th ed.)HAVENS, R. Economics: Principles of Income, Prices and. New York: Macinillan, 1966.
Tohutoro MLA (9th ed.)HAVENS, R. Economics: Principles of Income, Prices and. Macinillan, 1966.
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