Lua APA (7ú heag.)

Poonia M.P. & Sharma S.C. (2023). Environmental Studies (03rd.). Khanna Publications.

Lua i Stíl Chicago (17ú heag.)

Poonia M.P. & Sharma S.C. Environmental Studies. 03rd. New Delhi: Khanna Publications, 2023.

Lua MLA (9ú heag.)

Poonia M.P. & Sharma S.C. Environmental Studies. 03rd. Khanna Publications, 2023.

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