APA (7th ed.) Citation

Thomas, C. K. (1958). An introduction to the phonetics of american english. The Ronald press company.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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