APA (7th ed.) Citation

Twain, M., Warner, C. D., & Pinchot, B. (2011). The gilded age. Blackstone Audio.

Chicago Style (17th ed.) Citation

Twain, Mark, Charles Dudley Warner, and Bronson Pinchot. The Gilded Age. [Ashland, OR]: Blackstone Audio, 2011.

MLA (8th ed.) Citation

Twain, Mark, et al. The Gilded Age. Blackstone Audio, 2011.

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