National Geographic Society (U.S.), Hyslop, S. G., & Daniels, P. (2011). Great empires: An illustrated atlas. National Geographic Society.
Cita Chicago Style (17a ed.)National Geographic Society (U.S.), Stephen G. Hyslop, y Patricia Daniels. Great Empires: An Illustrated Atlas. Washington, D.C.: National Geographic Society, 2011.
Cita MLA (8a ed.)National Geographic Society (U.S.), et al. Great Empires: An Illustrated Atlas. National Geographic Society, 2011.
Precaución: Estas citas no son 100% exactas.