एपीए उद्धरण

(1993). Chemistry for Civil services Examination Prelimanary Screening Test. Competition Review.

शिकागो स्टाइल उद्धरण

Chemistry for Civil Services Examination Prelimanary Screening Test. New Delhi: Competition Review, 1993.

एमएलए उद्धरण

Chemistry for Civil Services Examination Prelimanary Screening Test. Competition Review, 1993.