Cita APA (7a ed.)
Grosvenor, M. B., Shor, F., & Severy, M. The Age of Chivalry. National Geographic Society.
Cita estilo Chicago (17a ed.)
Grosvenor, Melville Bell, Franc Shor, y Merle Severy. The Age of Chivalry. Washington, EUA: National Geographic Society.
Cita MLA (9a ed.)
Grosvenor, Melville Bell, et al. The Age of Chivalry. National Geographic Society.
Precaución: Estas citas no son 100% exactas.