APA (7th ed.) Citation

Swan, M., & Smith, B. (2001). Learner English: A teacher's guide to interference and other problems (2. ed., repr.). Cambridge Univ. Pr.

Chicago Style (17th ed.) Citation

Swan, Michael, and Bernard Smith. Learner English: A Teacher's Guide to Interference and Other Problems. 2. ed., repr. Cambridge u.a: Cambridge Univ. Pr, 2001.

MLA (9th ed.) Citation

Swan, Michael, and Bernard Smith. Learner English: A Teacher's Guide to Interference and Other Problems. 2. ed., repr. Cambridge Univ. Pr, 2001.