APA (7th ed.) Citation

Nuttall, C. E., & Gaist, J. Must, need and have to. Longman.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.