Agrahari Ravi P. (2024). Environmental Ecology, Bio diversity, Climate Change & Disaster Management: For UPSC, IES, IFoS & other State Competitive Examinations (3rd ed.). Mc Graw Hill.
Lua i Stíl Chicago (17ú heag.)Agrahari Ravi P. Environmental Ecology, Bio Diversity, Climate Change & Disaster Management: For UPSC, IES, IFoS & Other State Competitive Examinations. 3rd ed. Chennai: Mc Graw Hill, 2024.
Lua MLA (9ú heag.)Agrahari Ravi P. Environmental Ecology, Bio Diversity, Climate Change & Disaster Management: For UPSC, IES, IFoS & Other State Competitive Examinations. 3rd ed. Mc Graw Hill, 2024.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.