APA (7th ed.) Citation

Sparks, F. W. (1946). Plane trigonometry (Revised ed.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Sparks, Fred Winchell. Plane Trigonometry. Revised ed. New York: Prentice-Hall, 1946.

MLA (9th ed.) Citation

Sparks, Fred Winchell. Plane Trigonometry. Revised ed. Prentice-Hall, 1946.