APA (7th ed.) Citation

Niles, N. O. (1968). Plane Trigonometry (2nd ed.). John Wiley.

Chicago Style (17th ed.) Citation

Niles, Nathan O. Plane Trigonometry. 2nd ed. New York, London: John Wiley, 1968.

MLA (9th ed.) Citation

Niles, Nathan O. Plane Trigonometry. 2nd ed. John Wiley, 1968.

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