APA ציטוט

Singh, I. P., & Tiwari, S. C. (1980). Man and his environment. Concept.

Chicago Style (17th ed.) Citation

Singh, Indera P., and Surendra Chandra Tiwari. Man and His Environment. New Delhi: Concept, 1980.

ציטוט MLA

Singh, Indera P., and Surendra Chandra Tiwari. Man and His Environment. Concept, 1980.