एपीए उद्धरण

Samuelson, P. A. (1980). Economics. London: McGraw-Hill.

शिकागो स्टाइल उद्धरण

Samuelson, Paul A. Economics. London: McGraw-Hill, 1980.

एमएलए उद्धरण

Samuelson, Paul A. Economics. London: McGraw-Hill, 1980.