APA (7th ed.) Citation

O'Connor, J. D., Fletcher, C., & Kenworthy, J. (1996). Sounds English: A pronunciation practice book (1st published, 8th impression.). Longman.

Chicago Style (17th ed.) Citation

O'Connor, Joseph Desmond, Clare Fletcher, and Joanne Kenworthy. Sounds English: A Pronunciation Practice Book. 1st published, 8th impression. London [etc.]: Longman, 1996.

MLA (9th ed.) Citation

O'Connor, Joseph Desmond, et al. Sounds English: A Pronunciation Practice Book. 1st published, 8th impression. Longman, 1996.