APA (7th ed.) Citation

Whaley, D. J. (2008). Problems and materials on commercial law (9. ed.). Aspen Publ.

Chicago Style (17th ed.) Citation

Whaley, Douglas J. Problems and Materials on Commercial Law. 9. ed. New York, NY: Aspen Publ, 2008.

MLA (9th ed.) Citation

Whaley, Douglas J. Problems and Materials on Commercial Law. 9. ed. Aspen Publ, 2008.