Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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