एपीए उद्धरण

Singh, S. (2011). Geography for State Civil Services and other competitive examinations. Mc Graw Hill.

शिकागो स्टाइल उद्धरण

Singh, Surender. Geography for State Civil Services and Other Competitive Examinations. New Delhi: Mc Graw Hill, 2011.

एमएलए उद्धरण

Singh, Surender. Geography for State Civil Services and Other Competitive Examinations. Mc Graw Hill, 2011.