APA

Disha Publication, . (2024). Ecology and environment compendium with NCERT (class 6 to 12): coverage for UPSC, IAS and state PSC : general studies prelim and main exams [4th ed.]. New Delhi: Disha Publication.

Chicago

Disha Publication, . 2024. Ecology and environment compendium with NCERT (class 6 to 12): coverage for UPSC, IAS and state PSC : general studies prelim and main exams [4th ed.]. New Delhi: Disha Publication.

Harvard

Disha Publication, . (2024). Ecology and environment compendium with NCERT (class 6 to 12): coverage for UPSC, IAS and state PSC : general studies prelim and main exams [4th ed.]. New Delhi: Disha Publication.

MLA

Disha Publication, . Ecology and environment compendium with NCERT (class 6 to 12): coverage for UPSC, IAS and state PSC : general studies prelim and main exams [4th ed.]. New Delhi: Disha Publication. 2024.