एपीए उद्धरण

SurenderSingh & Dr.Parmar,Virinder. (2018). General studies ;for civil services preliminary exams. MC.Graw hill educations.

शिकागो स्टाइल उद्धरण

SurenderSingh और Dr.Parmar,Virinder. General Studies ;for Civil Services Preliminary Exams. Chennai: MC.Graw hill educations, 2018.

एमएलए उद्धरण

SurenderSingh और Dr.Parmar,Virinder. General Studies ;for Civil Services Preliminary Exams. MC.Graw hill educations, 2018.