APA (7th ed.) Citation

Gardner, E. S. (1986). The case of the dangerous dowager. Ballantine Books.

Chicago Style (17th ed.) Citation

Gardner, Erle Stanley. The Case of the Dangerous Dowager. New York: Ballantine Books, 1986.

MLA (8th ed.) Citation

Gardner, Erle Stanley. The Case of the Dangerous Dowager. Ballantine Books, 1986.

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