Cita APA (7a ed.)

Hey, J. (1983). The Radio universe (3th ed.). Pegamon.

Cita Chicago Style (17a ed.)

Hey, J.S. The Radio Universe. 3th ed. Oxford, etc.: Pegamon, 1983.

Cita MLA (9a ed.)

Hey, J.S. The Radio Universe. 3th ed. Pegamon, 1983.