APA (7th ed.) Citation

Butcher, J., & Marsters, J. (2012). Cold days: A novel of the Dresden files (Unabridged.). Penguin Audio.

Chicago Style (17th ed.) Citation

Butcher, Jim, and James Marsters. Cold Days: A Novel of the Dresden Files. Unabridged. [New York]: Penguin Audio, 2012.

MLA (9th ed.) Citation

Butcher, Jim, and James Marsters. Cold Days: A Novel of the Dresden Files. Unabridged. Penguin Audio, 2012.