WORTMAN, S. (1978). To feed this World: The challenge and the strategy. The Johns Hopkins University.
Chicago Style (17. basım) AtıfWORTMAN, Sterling. To Feed This World: The Challenge and the Strategy. Baltimore: The Johns Hopkins University, 1978.
MLA (9th ed.) AtıfWORTMAN, Sterling. To Feed This World: The Challenge and the Strategy. The Johns Hopkins University, 1978.
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