Παραπομπή APA

Dubey, R. n. Economic and commercial Geography (16 th ed.). Kitab Mahal.

Παραπομπή Chicago Style

Dubey, R n. Economic and Commercial Geography. 16 th ed. Allahabad: Kitab Mahal.

Παραπομπή MLA

Dubey, R n. Economic and Commercial Geography. 16 th ed. Kitab Mahal.