APA (7th ed.) Citation

Perry, A., & Colacci, D. (2017). An echo of murder (Unabridged.). Recorded Books Inc..

Chicago Style (17th ed.) Citation

Perry, Anne, and David Colacci. An Echo of Murder. Unabridged. Prince Frederick: Recorded Books Inc., 2017.

MLA (8th ed.) Citation

Perry, Anne, and David Colacci. An Echo of Murder. Unabridged. Recorded Books Inc., 2017.

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