एपीए उद्धरण

SHARMA, A. (2020). General Studies for Civil Cervices Preliminary Examination PaperII. McGraw Hill Education (India) Pvt.Ltd.

शिकागो स्टाइल उद्धरण

SHARMA, Arun. General Studies for Civil Cervices Preliminary Examination PaperII. Chennai: McGraw Hill Education (India) Pvt.Ltd, 2020.

एमएलए उद्धरण

SHARMA, Arun. General Studies for Civil Cervices Preliminary Examination PaperII. McGraw Hill Education (India) Pvt.Ltd, 2020.