APA (7th ed.) Citation

Code, J. B., & Cicognani, A. G. (1940). Dictionary of the american hierarchy. Longman.

Chicago Style (17th ed.) Citation

Code, Joseph Bernard, and Amleto Giovanni Cicognani. Dictionary of the American Hierarchy. New York [etc.]: Longman, 1940.

MLA (9th ed.) Citation

Code, Joseph Bernard, and Amleto Giovanni Cicognani. Dictionary of the American Hierarchy. Longman, 1940.