APA (7th ed.) Citation

Cussler, C., Cussler, D., & Brick, S. (2019). Celtic empire: A Dirk Pitt novel (Unabridged.). Penguin Audio.

Chicago Style (17th ed.) Citation

Cussler, Clive, Dirk Cussler, and Scott Brick. Celtic Empire: A Dirk Pitt Novel. Unabridged. [New York]: Penguin Audio, 2019.

MLA (8th ed.) Citation

Cussler, Clive, et al. Celtic Empire: A Dirk Pitt Novel. Unabridged. Penguin Audio, 2019.

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