APA (7th ed.) Citation

Nuttall, C. E., & Gaist, J. (1976). Must, need and have to (5. impr.). Longman.

Chicago Style (17th ed.) Citation

Nuttall, C. E., and J. Gaist. Must, Need and Have to. 5. impr. London: Longman, 1976.

MLA (9th ed.) Citation

Nuttall, C. E., and J. Gaist. Must, Need and Have to. 5. impr. Longman, 1976.