Style de citation APA (7e éd.)

Singh, S. &. P. (2019). General studies for civil services preliminary examination 2019. McGraw Hill.

Style de citation Chicago (17e éd.)

Singh, Surendra & Parmar. General Studies for Civil Services Preliminary Examination 2019. Chennai: McGraw Hill, 2019.

Style de citation MLA (9e éd.)

Singh, Surendra & Parmar. General Studies for Civil Services Preliminary Examination 2019. McGraw Hill, 2019.