एपीए उद्धरण

Richardson, G. B. (1969). Economic theory. Huchinson University Library.

शिकागो स्टाइल उद्धरण

Richardson, G. B. Economic Theory. London: Huchinson University Library, 1969.

एमएलए उद्धरण

Richardson, G. B. Economic Theory. Huchinson University Library, 1969.