Singh, G. .. (1979). Transformation of agriculture. Vishal Pub.
Chicagoスタイル(17版)引用形式Singh, G .B. Transformation of Agriculture. Haryana: Vishal Pub, 1979.
MLA(9版)引用形式Singh, G .B. Transformation of Agriculture. Vishal Pub, 1979.
警告: この引用は必ずしも正確ではありません.