APA (7th ed.) Citation

Whitney, W. D. (1971). Language and the study of language: Twelve lectures on the principles of linguistic science (6th ed.). AMS Press.

Chicago Style (17th ed.) Citation

Whitney, William Dwight. Language and the Study of Language: Twelve Lectures on the Principles of Linguistic Science. 6th ed. New York: AMS Press, 1971.

MLA (9th ed.) Citation

Whitney, William Dwight. Language and the Study of Language: Twelve Lectures on the Principles of Linguistic Science. 6th ed. AMS Press, 1971.