APA (7th ed.) Citation

Sapir, E. (1939). Language: An introduction to the study of speech. Harcourt, Brace and Co..

Chicago Style (17th ed.) Citation

Sapir, Edward. Language: An Introduction to the Study of Speech. New York: Harcourt, Brace and Co., 1939.

MLA (8th ed.) Citation

Sapir, Edward. Language: An Introduction to the Study of Speech. Harcourt, Brace and Co., 1939.