Asthana, D. K., & Asthana, M. (1998). Environment: Problems and Solutions. S. Chand & Company Ltd..
Citación estilo ChicagoAsthana, D. K., and Meera Asthana. Environment: Problems and Solutions. New Delhi: S. Chand & Company Ltd., 1998.
Cita MLAAsthana, D. K., and Meera Asthana. Environment: Problems and Solutions. S. Chand & Company Ltd., 1998.
Warning: These citations may not always be 100% accurate.