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