Ojha, N. N. (2007). Planner for civil services examination (9th ed.). Chronicle Books.
Chicago Stili AlıntıOjha, N. N. Planner for Civil Services Examination. 9th ed. New Delhi: Chronicle Books, 2007.
MLA AlıntıOjha, N. N. Planner for Civil Services Examination. 9th ed. Chronicle Books, 2007.
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