APA (7th ed.) Citation

Siddons, A. W., & Hughes, R. T. (1952). Trigonometry. Cambridge at University Press.

Chicago Style (17th ed.) Citation

Siddons, A. W., and R. T. Hughes. Trigonometry. London ; New York: Cambridge at University Press, 1952.

MLA (9th ed.) Citation

Siddons, A. W., and R. T. Hughes. Trigonometry. Cambridge at University Press, 1952.