APA (7th ed.) Citation

Astor, W. W. A. (1889). Sforza: A story of Milan. C. Scribner's sons.

Chicago Style (17th ed.) Citation

Astor, William Waldorf Astor. Sforza: A Story of Milan. New York: C. Scribner's sons, 1889.

MLA (9th ed.) Citation

Astor, William Waldorf Astor. Sforza: A Story of Milan. C. Scribner's sons, 1889.

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