Cita APA (7a ed.)

Capel, A., & Sharp, W. (2005). Objetive KET: Student´s book. Cambridge University Press.

Cita Chicago Style (17a ed.)

Capel, Annette, y Wendy Sharp. Objetive KET: Student´s Book. Cambridge: Cambridge University Press, 2005.

Cita MLA (9a ed.)

Capel, Annette, y Wendy Sharp. Objetive KET: Student´s Book. Cambridge University Press, 2005.