Cita APA (7a ed.)

Kenny, N., & Luque-Mortimer, L. (2000). First certificate, practice tests plus, with key (1a. ed.). Pearson Education.

Cita Chicago Style (17a ed.)

Kenny, Nick, y Lucrecia Luque-Mortimer. First Certificate, Practice Tests Plus, with Key. 1a. ed. Essex: Pearson Education, 2000.

Cita MLA (9a ed.)

Kenny, Nick, y Lucrecia Luque-Mortimer. First Certificate, Practice Tests Plus, with Key. 1a. ed. Pearson Education, 2000.