Cita APA (7th ed.)

Ellis, R. (2015). Understanding second language acquisition (2a. ed.). Oxford Press University.

Cita Chicago (17th ed.)

Ellis, Rod. Understanding Second Language Acquisition. 2a. ed. Oxford: Oxford Press University, 2015.

Cita MLA (9th ed.)

Ellis, Rod. Understanding Second Language Acquisition. 2a. ed. Oxford Press University, 2015.