APA (7th ed.) Citation

Stratton, W. T., & Daugherty, R. D. (1939). Plane trigonometry. Prentice-Hall.

Chicago Style (17th ed.) Citation

Stratton, William Timothy, and Robert Dodds Daugherty. Plane Trigonometry. New York: Prentice-Hall, 1939.

MLA (9th ed.) Citation

Stratton, William Timothy, and Robert Dodds Daugherty. Plane Trigonometry. Prentice-Hall, 1939.