एपीए उद्धरण

Harcourt, G. (1968). Economic activity. The University Press.

शिकागो स्टाइल उद्धरण

Harcourt, G.C. Economic Activity. Cambridge: The University Press, 1968.

एमएलए उद्धरण

Harcourt, G.C. Economic Activity. The University Press, 1968.