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.
Cita Chicago Style (17a ed.)National Geographic Television, National Geographic Society (U.S.), Public Broadcasting Service (U.S.), Liesl Clark, y Jamie Effros. Secrets of Shangri-La: Quest for Sacred Caves. Washington, D.C.: NGHT, 2009.
Cita MLA (8a ed.)National Geographic Television, et al. Secrets of Shangri-La: Quest for Sacred Caves. NGHT, 2009.
Precaución: Estas citas no son 100% exactas.