Gordeeep, R. A., & Trivedi, P. R. (1992). Environmental water and soil analysis.
Dyfyniad Arddull ChicagoGordeeep, R A., and P R. Trivedi. Environmental Water and Soil Analysis. New Delhi, Akashdeep Publishing House, 1992.
Dyfyniad MLAGordeeep, R A., and P R. Trivedi. Environmental Water and Soil Analysis. 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.