एपीए उद्धरण

Gordon, R. A. (1961). Business fluctuations (2nd. ed.). Harper & Row.

शिकागो स्टाइल उद्धरण

Gordon, Robert Aaron. Business Fluctuations. 2nd. ed. Harper & Row, 1961.

एमएलए उद्धरण

Gordon, Robert Aaron. Business Fluctuations. 2nd. ed. Harper & Row, 1961.