Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.