एपीए उद्धरण

Singh S.K. Business mathematics/2e (2nd rev ed.). Brijwasi book distributors and publishers.

शिकागो स्टाइल उद्धरण

Singh S.K. Business Mathematics/2e. 2nd rev ed. New Delhi: Brijwasi book distributors and publishers.

एमएलए उद्धरण

Singh S.K. Business Mathematics/2e. 2nd rev ed. Brijwasi book distributors and publishers.