Amir, P., & Knipscheer, H. C. (1989). Conducting on-farm animal research: Procedures and economic analysis. Winrock International Institute for Agricultural Development and International Development Research.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিAmir, Pervaiz, এবং Hendrik C. Knipscheer. Conducting On-farm Animal Research: Procedures and Economic Analysis. Singapore: Winrock International Institute for Agricultural Development and International Development Research, 1989.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিAmir, Pervaiz, এবং Hendrik C. Knipscheer. Conducting On-farm Animal Research: Procedures and Economic Analysis. Winrock International Institute for Agricultural Development and International Development Research, 1989.
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