APA (7th ed.) Citation

National Public Radio (U.S.) & Palca, J. (2013). Exploring space. HighBridge Audio.

Chicago Style (17th ed.) Citation

National Public Radio (U.S.) and Joe Palca. Exploring Space. [Minneapolis, MN]: HighBridge Audio, 2013.

MLA (8th ed.) Citation

National Public Radio (U.S.) and Joe Palca. Exploring Space. HighBridge Audio, 2013.

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