APA (7th ed.) Citation

Allen, F. S. (1949). Allen's synonyms and antonyms. Harper.

Chicago Style (17th ed.) Citation

Allen, Frederic Sturges. Allen's Synonyms and Antonyms. New York: Harper, 1949.

MLA (9th ed.) Citation

Allen, Frederic Sturges. Allen's Synonyms and Antonyms. Harper, 1949.

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