Παραπομπή APA

Singh, A. K. K. (1987). Forest resources, economy and environment. Concept Publishing Company.

Παραπομπή Chicago Style

Singh, A. K. Kumra. Forest Resources, Economy and Environment. New Delhi: Concept Publishing Company, 1987.

Παραπομπή MLA

Singh, A. K. Kumra. Forest Resources, Economy and Environment. Concept Publishing Company, 1987.