Cita APA (7th ed.)

Bradley, M. Z. (1979). The planet savers. Gregg Press.

Cita Chicago (17th ed.)

Bradley, Marion Zimmer. The Planet Savers. Boston: Gregg Press, 1979.

Cita MLA (8th ed.)

Bradley, Marion Zimmer. The Planet Savers. Gregg Press, 1979.