APA (7th ed.) Citation

Gabaldon, D., & Porter, D. (2009). An echo in the bone: A novel. Recorded Books.

Chicago Style (17th ed.) Citation

Gabaldon, Diana, and Davina Porter. An Echo in the Bone: A Novel. [Prince Frederick, Md.]: Recorded Books, 2009.

MLA (8th ed.) Citation

Gabaldon, Diana, and Davina Porter. An Echo in the Bone: A Novel. Recorded Books, 2009.

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