Cita APA (7a ed.)

Laumer, K., & Silverberg, R. Science fiction special. Sidgwick and Jackson.

Cita Chicago Style (17a ed.)

Laumer, Keith, y Robert Silverberg. Science Fiction Special. London: Sidgwick and Jackson.

Cita MLA (8a ed.)

Laumer, Keith, y Robert Silverberg. Science Fiction Special. Sidgwick and Jackson.