Gurmel Singh, Joshy, B. P., & Venkata Ramanan. (1990). Manual of soil and water conservation practices (lost).
Chicago Style citaatGurmel Singh, B P. Joshy, en Venkata Ramanan. Manual of Soil and Water Conservation Practices (lost). NewDelhi, Oxford, 1990.
MLA citatieGurmel Singh, et al. Manual of Soil and Water Conservation Practices (lost). 1990.
Let op: Deze citaties zijn niet altijd 100% accuraat.