APA (7th ed.) Zitazioa

Godfrey, R. (2016). Empower A1: Starter Workbook with answers (1a. ed.). Cambridge University.

Chicago Style (17th ed.) Zitazioa

Godfrey, Rachel. Empower A1: Starter Workbook with Answers. 1a. ed. Cambridge: Cambridge University, 2016.

MLA (9th ed.) Zitazioa

Godfrey, Rachel. Empower A1: Starter Workbook with Answers. 1a. ed. Cambridge University, 2016.