Cita APA (7a ed.)

Plummer, A. (1929). Exercises in economics. Sir Isaac Pitman & Sons.

Cita Chicago Style (17a ed.)

Plummer, Alfred. Exercises in Economics. London [etc.]: Sir Isaac Pitman & Sons, 1929.

Cita MLA (9a ed.)

Plummer, Alfred. Exercises in Economics. Sir Isaac Pitman & Sons, 1929.