Cita APA (7a ed.)

Asimov, I., & McKeever, L. (2011). Foundation and earth (Unabridged.). Random House Audio.

Cita Chicago Style (17a ed.)

Asimov, Isaac, y Larry McKeever. Foundation and Earth. Unabridged. New York: Random House Audio, 2011.

Cita MLA (8a ed.)

Asimov, Isaac, y Larry McKeever. Foundation and Earth. Unabridged. Random House Audio, 2011.

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