Cita APA (7a ed.)

Sagan, C., & Agel, p. J. (1975). The cosmic connection. Coronet Books.

Cita Chicago Style (17a ed.)

Sagan, Carl, y prod. Jerome Agel. The Cosmic Connection. Coronet Books, 1975.

Cita MLA (8a ed.)

Sagan, Carl, y prod. Jerome Agel. The Cosmic Connection. Coronet Books, 1975.