Παραπομπή APA

Gupta, A. D. (1980). Economic and Commerical Geography: A Study of the world economic Resources and their utilisation and trade (28th rev ed.). Mukherje, A.

Παραπομπή Chicago Style

Gupta, A Das. Economic and Commerical Geography: A Study of the World Economic Resources and Their Utilisation and Trade. 28th rev ed. Calcutta: Mukherje, A, 1980.

Παραπομπή MLA

Gupta, A Das. Economic and Commerical Geography: A Study of the World Economic Resources and Their Utilisation and Trade. 28th rev ed. Mukherje, A, 1980.