APA Edition Citation

Sanjan Kumar. Environment and ecology: Highly useful for UPSC and state PCS exams. Arihant publications.

Chicago Edition Citation

Sanjan Kumar. Environment and Ecology: Highly Useful for UPSC and State PCS Exams. Meerut: Arihant publications.

MLA Edition Citation

Sanjan Kumar. Environment and Ecology: Highly Useful for UPSC and State PCS Exams. Arihant publications.

Warning: These citations may not always be 100% accurate.