Cita APA

Parsons, J., & Witherick, N. (2011). Speakout Pre-intermediate: Teachers resource book (1a. ed.). Harlow: Pearson/Longman.

Citación estilo Chicago

Parsons, Jenny, and Nick Witherick. Speakout Pre-intermediate: Teachers Resource Book. 1a. ed. Harlow: Pearson/Longman, 2011.

Cita MLA

Parsons, Jenny, and Nick Witherick. Speakout Pre-intermediate: Teachers Resource Book. 1a. ed. Harlow: Pearson/Longman, 2011.