Cita APA (7a ed.)

Keenan, D., & Business Contract. (2007). Business law (8h ed.).

Cita Chicago Style (17a ed.)

Keenan, Denis, y Business Contract. Business Law. 8h ed. 2007.

Cita MLA (9a ed.)

Keenan, Denis, y Business Contract. Business Law. 8h ed. 2007.