एपीए उद्धरण

Tolfree, W. R. (1962). Notes on economic theory.

शिकागो स्टाइल उद्धरण

Tolfree, W. Reay. Notes on Economic Theory. 1962.

एमएलए उद्धरण

Tolfree, W. Reay. Notes on Economic Theory. 1962.