Cita APA (7a ed.)

Norris, R., Jeffries, A., Scrivener, J., & Bowen, T. (2008). Straightforward: Advanced. Macmillan.

Cita Chicago Style (17a ed.)

Norris, Roy, Amanda Jeffries, Jim Scrivener, y Tim Bowen. Straightforward: Advanced. Oxford: Macmillan, 2008.

Cita MLA (9a ed.)

Norris, Roy, et al. Straightforward: Advanced. Macmillan, 2008.