APA (7th ed.) Citation

Roe, C. (2001). A potion for a widow (Berkley Prime Crime mass-market ed.). Berkley Prime Crime.

Chicago Style (17th ed.) Citation

Roe, Caroline. A Potion for a Widow. Berkley Prime Crime mass-market ed. New York, N.Y.: Berkley Prime Crime, 2001.

MLA (9th ed.) Citation

Roe, Caroline. A Potion for a Widow. Berkley Prime Crime mass-market ed. Berkley Prime Crime, 2001.