Cita APA (7th ed.)

Tolfree, W. R. (1971). Notes on economic theory (2d ed.). Pitman.

Cita Chicago (17th ed.)

Tolfree, W. Reay. Notes on Economic Theory. 2d ed. London: Pitman, 1971.

Cita MLA (8th ed.)

Tolfree, W. Reay. Notes on Economic Theory. 2d ed. Pitman, 1971.