APA (7th ed.) Citation

Colby, F. O. (1950). The American pronouncing dictionary of troublesome words. Crowell.

Chicago Style (17th ed.) Citation

Colby, Frank O. The American Pronouncing Dictionary of Troublesome Words. New York: Crowell, 1950.

MLA (9th ed.) Citation

Colby, Frank O. The American Pronouncing Dictionary of Troublesome Words. Crowell, 1950.