Cita APA (7a ed.)

Asimov, I. (2010). Foundation: Foundation and empire ; Second foundation. Everymans Library.

Cita Chicago Style (17a ed.)

Asimov, Isaac. Foundation: Foundation and Empire ; Second Foundation. New York: Everymans Library, 2010.

Cita MLA (8a ed.)

Asimov, Isaac. Foundation: Foundation and Empire ; Second Foundation. Everymans Library, 2010.

Precaución: Estas citas no son 100% exactas.