APA (7th ed.) Citation
Duggal, K. N. (2002). Elements of environmental engineering (6th ed.). S. Chand.
Chicago Style (17th ed.) Citation
Duggal, K. N. Elements of Environmental Engineering. 6th ed. New Delhi: S. Chand, 2002.
MLA (9th ed.) Citation
Duggal, K. N. Elements of Environmental Engineering. 6th ed. S. Chand, 2002.
Warning: These citations may not always be 100% accurate.