Deismireacht APA

Ashok Singh. (2019). UPSC Civil services prelims: General studies-1. wiley.

Chicago Edition Citation

Ashok Singh. UPSC Civil Services Prelims: General Studies-1. New Delhi: wiley, 2019.

Deismireacht MLA

Ashok Singh. UPSC Civil Services Prelims: General Studies-1. wiley, 2019.

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