Cita APA (7a ed.)

Capel, A., & Sharp, W. (2014). Objective first (Fourth edition.). Cambridge University Press.

Cita Chicago Style (17a ed.)

Capel, Annette, y Wendy Sharp. Objective First. Fourth edition. Cambridge: Cambridge University Press, 2014.

Cita MLA (9a ed.)

Capel, Annette, y Wendy Sharp. Objective First. Fourth edition. Cambridge University Press, 2014.