APA (7th ed.) Citation

Case, D., Davey, J., & Milne, J. (1983). Extending writing skills in English. Heinemann Educational.

Chicago Style (17th ed.) Citation

Case, Doug, John Davey, and John Milne. Extending Writing Skills in English. London: Heinemann Educational, 1983.

MLA (9th ed.) Citation

Case, Doug, et al. Extending Writing Skills in English. Heinemann Educational, 1983.