APA (7th ed.) Citation

Richards, J. C., Platt, J., & Weber, H. (1985). Longman dictionary of applied linguistics. Longman.

Chicago Style (17th ed.) Citation

Richards, Jack C., John Platt, and Heidi Weber. Longman Dictionary of Applied Linguistics. London: Longman, 1985.

MLA (9th ed.) Citation

Richards, Jack C., et al. Longman Dictionary of Applied Linguistics. Longman, 1985.