Tatian, P. A. (1992). Designing a data entry and verification system. International Food Policy Research Institute.
Lua i Stíl Chicago (17ú heag.)Tatian, Peter A. Designing a Data Entry and Verification System. Washington, D.C: International Food Policy Research Institute, 1992.
Lua MLA (9ú heag.)Tatian, Peter A. Designing a Data Entry and Verification System. International Food Policy Research Institute, 1992.
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