Godfrey, R. (2016). Empower A1: Starter Workbook with answers (1a. ed.). Cambridge University.
Chicago-čujuhus (17. p.)Godfrey, Rachel. Empower A1: Starter Workbook with Answers. 1a. ed. Cambridge: Cambridge University, 2016.
MLA-čujuhus (9. p.)Godfrey, Rachel. Empower A1: Starter Workbook with Answers. 1a. ed. Cambridge University, 2016.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.