APA (7th ed.) Citation

Crathorne, A. R. (1941). Brief trigonometry: A text in twenty assignments. Henry Holt.

Chicago Style (17th ed.) Citation

Crathorne, Arthur R. Brief Trigonometry: A Text in Twenty Assignments. New York: Henry Holt, 1941.

MLA (9th ed.) Citation

Crathorne, Arthur R. Brief Trigonometry: A Text in Twenty Assignments. Henry Holt, 1941.

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