APA (7th ed.) Citation

Hall, H. S., & Knight, S. R. (1952). Elementary trigonometry (4th ed., Repr.). Macmillan.

Chicago Style (17th ed.) Citation

Hall, H. S., and S. R. Knight. Elementary Trigonometry. 4th ed., Repr. London: Macmillan, 1952.

MLA (9th ed.) Citation

Hall, H. S., and S. R. Knight. Elementary Trigonometry. 4th ed., Repr. Macmillan, 1952.

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