Cita APA (7th ed.)

Clarke, A. C. (1976). Imperial Earth. Bantam Books.

Cita Chicago (17th ed.)

Clarke, Arthur C. Imperial Earth. New York: Bantam Books, 1976.

Cita MLA (9th ed.)

Clarke, Arthur C. Imperial Earth. Bantam Books, 1976.

Atenció: Aquestes cites poden no estar 100% correctes.