Citazione Stile APA (7a Edizione)

Doff, A., Thaine, C., Stranks, J., Lewis-Jones, P., & Puchta, H. (2022). Empower B1+: Intermediate Student's Book with eBook (Second edition.). Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Doff, Adrian, Craig Thaine, Jeff Stranks, Peter Lewis-Jones, e Herbert Puchta. Empower B1+: Intermediate Student's Book with EBook. Second edition. Cambridge, United Kingdom: Cambridge University Press, 2022.

Citatione MLA (9a ed.)

Doff, Adrian, et al. Empower B1+: Intermediate Student's Book with EBook. Second edition. Cambridge University Press, 2022.