Cita APA (7a ed.)

Keenan, D., & Riches, S. (2005). Business law (7th ed.). Pearson/Longman.

Cita Chicago Style (17a ed.)

Keenan, Denis, y Sarah Riches. Business Law. 7th ed. London: Pearson/Longman, 2005.

Cita MLA (9a ed.)

Keenan, Denis, y Sarah Riches. Business Law. 7th ed. Pearson/Longman, 2005.