Cita APA (7a ed.)
(1968). Greece and Rome: Builders of our world. National Geographic Society.
Cita Chicago Style (17a ed.)
Greece and Rome: Builders of Our World. Washington: National Geographic Society, 1968.
Cita MLA (9a ed.)
Greece and Rome: Builders of Our World. National Geographic Society, 1968.
Precaución: Estas citas no son 100% exactas.