APA (7th ed.) Citation

Ludlum, J. K. (1891). Under a cloud: A novel. R. Bonner's Sons.

Chicago Style (17th ed.) Citation

Ludlum, Jean Kate. Under a Cloud: A Novel. New York: R. Bonner's Sons, 1891.

MLA (9th ed.) Citation

Ludlum, Jean Kate. Under a Cloud: A Novel. R. Bonner's Sons, 1891.