United States. Agency for International Development. Office of Research and University Relations. (1971). The A.I.D. research program, 1962-1971, project objectives and results. s.n.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States. Agency for International Development. Office of Research and University Relations. The A.I.D. Research Program, 1962-1971, Project Objectives and Results. Washington, D.C: s.n.], 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited States. Agency for International Development. Office of Research and University Relations. The A.I.D. Research Program, 1962-1971, Project Objectives and Results. s.n.], 1971.
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