APA (7th ed.) Citation

National Public Radio (U.S.) & Martin, R. (2014). World War I. NPR ; HighBridge Audio.

Chicago Style (17th ed.) Citation

National Public Radio (U.S.) and Rachel Martin. World War I. [Washington, D.C.] : [Minneapolis, Minn.]: NPR ; HighBridge Audio, 2014.

MLA (8th ed.) Citation

National Public Radio (U.S.) and Rachel Martin. World War I. NPR ; HighBridge Audio, 2014.

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