Παραπομπή σε μορφή APA (7η εκδ.)

Swan, M., & Smith, B. (1987). Learner English: A teacher's guide to interference and other problems. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Swan, Michael, και Bernard Smith. Learner English: A Teacher's Guide to Interference and Other Problems. Cambridge, Cambridgeshire ; New York: Cambridge University Press, 1987.

Παραπομπή σε μορφή MLA (9th εκδ.)

Swan, Michael, και Bernard Smith. Learner English: A Teacher's Guide to Interference and Other Problems. Cambridge University Press, 1987.