APA (7th ed.) Citation

Van Dyke, H. (1912). The unknown quantity: A book of romance and some half-told tales. Scribner.

Chicago Style (17th ed.) Citation

Van Dyke, Henry. The Unknown Quantity: A Book of Romance and Some Half-told Tales. New York: Scribner, 1912.

MLA (9th ed.) Citation

Van Dyke, Henry. The Unknown Quantity: A Book of Romance and Some Half-told Tales. Scribner, 1912.