APA (7th ed.) Citation

Platt, J., Lian, H. M., & Weber, H. (1984). The new Englishes. Routledge and Kegan Paul.

Chicago Style (17th ed.) Citation

Platt, John, Ho Mian Lian, and Heidi Weber. The New Englishes. London: Routledge and Kegan Paul, 1984.

MLA (9th ed.) Citation

Platt, John, et al. The New Englishes. Routledge and Kegan Paul, 1984.