National Geographic Television, National Geographic Society (U.S.), Public Broadcasting Service (U.S.), Clark, L., & Effros, J. (2009). Secrets of Shangri-La: Quest for sacred caves. NGHT.
Chicago Style (17th ed.) CitationNational Geographic Television, National Geographic Society (U.S.), Public Broadcasting Service (U.S.), Liesl Clark, and Jamie Effros. Secrets of Shangri-La: Quest for Sacred Caves. Washington, D.C.: NGHT, 2009.
MLA引文National Geographic Television, et al. Secrets of Shangri-La: Quest for Sacred Caves. NGHT, 2009.
警告：這些引文格式不一定是100％准確.