APA استشهاد

Surender ,Singh. (2011). Geography: For State Civil Services and Other Competitive Examinations. Tata McGraw Hill Education Pvt.Ltd.

استشهاد بنمط شيكاغو

Surender ,Singh. Geography: For State Civil Services and Other Competitive Examinations. New Delhi: Tata McGraw Hill Education Pvt.Ltd, 2011.

MLA استشهاد

Surender ,Singh. Geography: For State Civil Services and Other Competitive Examinations. Tata McGraw Hill Education Pvt.Ltd, 2011.