Cita APA (7th ed.)

Oï Dell, F., & Black, M. (2015). Advanced trainer: Six practice tests with answers (2a. ed.). Cambridge University Press.

Cita Chicago (17th ed.)

Oï Dell, Felicity, i Michael Black. Advanced Trainer: Six Practice Tests with Answers. 2a. ed. Cambridge: Cambridge University Press, 2015.

Cita MLA (9th ed.)

Oï Dell, Felicity, i Michael Black. Advanced Trainer: Six Practice Tests with Answers. 2a. ed. Cambridge University Press, 2015.