Cita APA (7th ed.)

Brown, G., Williams, J., & Malmkjaer, K. (1996). Performance and competence in second language acquisition. Cambridge University.

Cita Chicago (17th ed.)

Brown, Gillian, John Williams, i Kirsten Malmkjaer. Performance and Competence in Second Language Acquisition. Nueva York: Cambridge University, 1996.

Cita MLA (9th ed.)

Brown, Gillian, et al. Performance and Competence in Second Language Acquisition. Cambridge University, 1996.