Cita APA (7a ed.)

Acklam, R. (2008). Pre-intermediate: Total english students' book and workbook (3a. ed.). Pearson Education.

Cita Chicago Style (17a ed.)

Acklam, Richard. Pre-intermediate: Total English Students' Book and Workbook. 3a. ed. Inglaterra: Pearson Education, 2008.

Cita MLA (8a ed.)

Acklam, Richard. Pre-intermediate: Total English Students' Book and Workbook. 3a. ed. Pearson Education, 2008.