Cita APA (7th ed.)
Ellis, R. (1985). Understanding second language acquisition. OUP.
Cita Chicago (17th ed.)
Ellis, Rod. Understanding Second Language Acquisition. New York: OUP, 1985.
Cita MLA (9th ed.)
Ellis, Rod. Understanding Second Language Acquisition. OUP, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.