Rajaram Kalpana, Suri R.K, & Vidya R. (2023). Developments In Science And Technology: For UPSC Civil Services Mains and Prelims General Studies (31st ed.). Spectrum Books.
Chicago Style (17. basım) AtıfRajaram Kalpana, Suri R.K, ve Vidya R. Developments In Science And Technology: For UPSC Civil Services Mains and Prelims General Studies. 31st ed. New Delhi: Spectrum Books, 2023.
MLA (9th ed.) AtıfRajaram Kalpana, et al. Developments In Science And Technology: For UPSC Civil Services Mains and Prelims General Studies. 31st ed. Spectrum Books, 2023.
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