Tohutoro APA (7th ed.)
Henderson, J. V. (1991). Principles of economics. D.C. Health.
Tohutoru Kātū Chicago (17th ed.)
Henderson, J Vernon. Principles of Economics. Massachusetts: D.C. Health, 1991.
Tohutoro MLA (9th ed.)
Henderson, J Vernon. Principles of Economics. D.C. Health, 1991.
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