Cita APA (7th ed.)

Thomas, C. K. (1958). An introduction to the phonetics of American english (2nd ed.). The Ronald Press Company.

Cita Chicago (17th ed.)

Thomas, Charles Kenneth. An Introduction to the Phonetics of American English. 2nd ed. New York: The Ronald Press Company, 1958.

Cita MLA (9th ed.)

Thomas, Charles Kenneth. An Introduction to the Phonetics of American English. 2nd ed. The Ronald Press Company, 1958.