APA引文

Surender Singh, C., & Virinder Parmar, C. (2017). General Studies for civil services preliminary examinations: GS paper 1 2017. McGraw Hill Education (India) Private Limited.

Chicago Edition Citation

Surender Singh, Comp, and Comp Virinder Parmar. General Studies for Civil Services Preliminary Examinations: GS Paper 1 2017. Chennai: McGraw Hill Education (India) Private Limited, 2017.

MLA引文

Surender Singh, Comp, and Comp Virinder Parmar. General Studies for Civil Services Preliminary Examinations: GS Paper 1 2017. McGraw Hill Education (India) Private Limited, 2017.