APA Edition Citation

Khullar, D. R., & Rao, J. A. C. S. (2018). Environment: For civil services prelims and main and other competitive examinations (2nd ed.). McGraw Hill Education.

Chicago Edition Citation

Khullar, D. R., and J. A. C. S. Rao. Environment: For Civil Services Prelims and Main and Other Competitive Examinations. 2nd ed. Chennai: McGraw Hill Education, 2018.

MLA Edition Citation

Khullar, D. R., and J. A. C. S. Rao. Environment: For Civil Services Prelims and Main and Other Competitive Examinations. 2nd ed. McGraw Hill Education, 2018.