Cita APA (7th ed.)

Doff, A. (2010). English unlimited: Starter. Coursebook with e-Portfolio. A1: Coursebook with e-Portfolio. A1. Cambridge University Press.

Cita Chicago (17th ed.)

Doff, Adrian. English Unlimited: Starter. Coursebook with E-Portfolio. A1: Coursebook with E-Portfolio. A1. Cambridge, United Kingdom: Cambridge University Press, 2010.

Cita MLA (9th ed.)

Doff, Adrian. English Unlimited: Starter. Coursebook with E-Portfolio. A1: Coursebook with E-Portfolio. A1. Cambridge University Press, 2010.