Cita APA (7a ed.)

Bell, J., & Kenny, N. (2019). Advanced expert: Student's resource book without key (3rd ed., 7th imp.). Pearson Education Limited.

Cita Chicago Style (17a ed.)

Bell, Jan, y Nick Kenny. Advanced Expert: Student's Resource Book Without Key. 3rd ed., 7th imp. Harlow, Essex, England: Pearson Education Limited, 2019.

Cita MLA (9a ed.)

Bell, Jan, y Nick Kenny. Advanced Expert: Student's Resource Book Without Key. 3rd ed., 7th imp. Pearson Education Limited, 2019.