Cita APA (7a ed.)

Aspinall, P., & Hashemi, L. (1991). CAE: Practice tests 1. Cambridge University Press.

Cita Chicago Style (17a ed.)

Aspinall, Patricia, y Louise Hashemi. CAE: Practice Tests 1. Cambridge: Cambridge University Press, 1991.

Cita MLA (8a ed.)

Aspinall, Patricia, y Louise Hashemi. CAE: Practice Tests 1. Cambridge University Press, 1991.