APA (7th ed.) Citation

Thomas, C. K. (1958). An introduction to the phonetics of American English. The Ronald Press.

Chicago Style (17th ed.) Citation

Thomas, Charles Kenneth. An Introduction to the Phonetics of American English. New York: The Ronald Press, 1958.

MLA (9th ed.) Citation

Thomas, Charles Kenneth. An Introduction to the Phonetics of American English. The Ronald Press, 1958.

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