Cita APA (7th ed.)

Ortega, L. (2009). Second language acquisition. Hodder Education.

Cita Chicago (17th ed.)

Ortega, Lourdes. Second Language Acquisition. London: Hodder Education, 2009.

Cita MLA (9th ed.)

Ortega, Lourdes. Second Language Acquisition. Hodder Education, 2009.