Singh, R. (1987). Farm production in rainfed sub-mountains Punjab. B.R. Publishing.
Chicagoスタイル(17版)引用形式Singh, Rachhpal. Farm Production in Rainfed Sub-mountains Punjab. Delhi: B.R. Publishing, 1987.
MLA(9版)引用形式Singh, Rachhpal. Farm Production in Rainfed Sub-mountains Punjab. B.R. Publishing, 1987.
警告: この引用は必ずしも正確ではありません.