APA সাইটেশন

Singh, A. K. (2009). Science & tecnology: For civil services examinations. TMH.

শিকাগো স্টাইলে সাইটেশন

Singh, Ashok Kumar. Science & Tecnology: For Civil Services Examinations. New Delhi: TMH, 2009.

এমএলএ সাইটেশন

Singh, Ashok Kumar. Science & Tecnology: For Civil Services Examinations. TMH, 2009.