APA (7th ed.) Citation

Sadler, A. J., & Thorning, D. W. S. (1983). Understanding mechanics. Oxford University Press.

Chicago Style (17th ed.) Citation

Sadler, A. J., and D. W. S. Thorning. Understanding Mechanics. London: Oxford University Press, 1983.

MLA (9th ed.) Citation

Sadler, A. J., and D. W. S. Thorning. Understanding Mechanics. Oxford University Press, 1983.