Cita APA

National Geographic Society (Estados Unidos). National Geographic Maps, Belt, D., Larson, M., Maher, K., Snodgrass, E., & Miller, D. (2008). Crucible of history: The Eastern Mediterranean. Washington, D.C.: National Geographic Society.

Citación estilo Chicago

National Geographic Society (Estados Unidos). National Geographic Maps, Don Belt, Marisa Larson, Kathy Maher, Elizabeth Snodgrass, y David Miller. Crucible of History: The Eastern Mediterranean. Washington, D.C.: National Geographic Society, 2008.

Cita MLA

National Geographic Society (Estados Unidos). National Geographic Maps, et al. Crucible of History: The Eastern Mediterranean. Washington, D.C.: National Geographic Society, 2008.