APA (7th ed.) Citation

Howells, W. D. Oliver Wendell Holmes (from Literary Friends and Acquaintance).

Chicago Style (17th ed.) Citation

Howells, William Dean. Oliver Wendell Holmes (from Literary Friends and Acquaintance).

MLA (9th ed.) Citation

Howells, William Dean. Oliver Wendell Holmes (from Literary Friends and Acquaintance).

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