Cita APA (7th ed.)

Whaley. (1997). Problem and Materials In Commercial law (5th ed.). Aspen law & Business.

Cita Chicago (17th ed.)

Whaley. Problem and Materials In Commercial Law. 5th ed. USA: Aspen law & Business, 1997.

Cita MLA (9th ed.)

Whaley. Problem and Materials In Commercial Law. 5th ed. Aspen law & Business, 1997.