Saini, L., & Bali, P. (1988). Commercial Geography. Kalyani Publishers.
Tohutoru Kātū Chicago (17th ed.)Saini, L.D, me P.K Bali. Commercial Geography. New Delhi, India: Kalyani Publishers, 1988.
Tohutoro MLA (9th ed.)Saini, L.D, me P.K Bali. Commercial Geography. Kalyani Publishers, 1988.
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