Gurmel Singh, Joshy, B. P., & Venkata Ramanan. (1990). Manual of soil and water conservation practices (lost).
シカゴスタイル引用形Gurmel Singh, B P. Joshy, , Venkata Ramanan. Manual of Soil and Water Conservation Practices (lost). NewDelhi, Oxford, 1990.
MLA引用形式Gurmel Singh, et al. Manual of Soil and Water Conservation Practices (lost). 1990.
警告: この引用は必ずしも正確ではありません.