APA (7th ed.) Citation

Anderson, S. D., Nuttall, C. E., & Shepherd, J. P. (1975). Can, could and be able to. Longman.

Chicago Style (17th ed.) Citation

Anderson, S. D., C. E. Nuttall, and J. P. Shepherd. Can, Could and Be Able to. London: Longman, 1975.

MLA (9th ed.) Citation

Anderson, S. D., et al. Can, Could and Be Able to. Longman, 1975.