APA (7th ed.) Citation

Smith, S. S. (1947). How to double your vocabulary. T. Y. Crowell Co.

Chicago Style (17th ed.) Citation

Smith, Samuel Stephenson. How to Double Your Vocabulary. New York: T. Y. Crowell Co, 1947.

MLA (9th ed.) Citation

Smith, Samuel Stephenson. How to Double Your Vocabulary. T. Y. Crowell Co, 1947.