APA (7th ed.) Zitazioa
Lewis, A. W. (1966). Development planning: The essential of economics policy. Harper.
Chicago Style (17th ed.) Zitazioa
Lewis, Arthur W. Development Planning: The Essential of Economics Policy. New York: Harper, 1966.
MLA (9th ed.) Zitazioa
Lewis, Arthur W. Development Planning: The Essential of Economics Policy. Harper, 1966.
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