एपीए उद्धरण

R.Nandagopal. (2007). Research methods in business. Excel Books.

शिकागो स्टाइल उद्धरण

R.Nandagopal. Research Methods in Business. New Delhi: Excel Books, 2007.

एमएलए उद्धरण

R.Nandagopal. Research Methods in Business. Excel Books, 2007.