Cita APA (7th ed.)

Doff, A., Thaine, C., Stranks, J., Lewis-Jones, P., & Puchta, H. (2022). Empower B2: Upper Intermediate Student's Book with eBook (Second edition.). Cambridge University Press.

Cita Chicago (17th ed.)

Doff, Adrian, Craig Thaine, Jeff Stranks, Peter Lewis-Jones, i Herbert Puchta. Empower B2: Upper Intermediate Student's Book with EBook. Second edition. Cambridge, United Kingdom: Cambridge University Press, 2022.

Cita MLA (9th ed.)

Doff, Adrian, et al. Empower B2: Upper Intermediate Student's Book with EBook. Second edition. Cambridge University Press, 2022.