APA (7th ed.) Citation

Mass, W., & Turetsky, M. (2013). Pi in the sky (Unabridged.). Recorded Books Inc..

Chicago Style (17th ed.) Citation

Mass, Wendy, and Mark Turetsky. Pi in the Sky. Unabridged. Prince Frederick: Recorded Books Inc., 2013.

MLA (8th ed.) Citation

Mass, Wendy, and Mark Turetsky. Pi in the Sky. Unabridged. Recorded Books Inc., 2013.

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