Singh, Y. (1973). Key communicators of agricultural innovations. Satish book enterprise.
シカゴスタイル引用形Singh, Y.P. Key Communicators of Agricultural Innovations. Agra: Satish book enterprise, 1973.
MLA引用形式Singh, Y.P. Key Communicators of Agricultural Innovations. Satish book enterprise, 1973.
警告: この引用は必ずしも正確ではありません.