APA (7th ed.) Citation

Ahmed Khan. (2006). A textbook of environmental studies. ABD Pub.

Chicago Style (17th ed.) Citation

Ahmed Khan. A Textbook of Environmental Studies. India: ABD Pub, 2006.

MLA (9th ed.) Citation

Ahmed Khan. A Textbook of Environmental Studies. ABD Pub, 2006.

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