Raj, G., & Trivedi, P. R. (1992). Encyclopaedia of Environmental sciences.
シカゴスタイル引用形Raj, Gurdeep, , P R. Trivedi. Encyclopaedia of Environmental Sciences. New Delhi, Akashdeep, 1992.
MLA引用形式Raj, Gurdeep, , P R. Trivedi. Encyclopaedia of Environmental Sciences. 1992.
警告: この引用は必ずしも正確ではありません.