Dubey, R. N. (1974). Economic and commercial geography (14th ed.). Kitab Mahal.
Citazione stile Chigago Style (17a edizione)Dubey, Ram Nath. Economic and Commercial Geography. 14th ed. Allahabad: Kitab Mahal, 1974.
Citatione MLA (9a ed.)Dubey, Ram Nath. Economic and Commercial Geography. 14th ed. Kitab Mahal, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.