Cita APA (7a ed.)
Samuelson, D. N. (Jul93). ON HARD SCIENCE FICTION. Science Fiction Studies, 20(2), 145-157.
Cita Chicago Style (17a ed.)
Samuelson, David N. "ON HARD SCIENCE FICTION." Science Fiction Studies 20, no. 2 (Jul93): 145-157.
Cita MLA (9a ed.)
Samuelson, David N. "ON HARD SCIENCE FICTION." Science Fiction Studies, vol. 20, no. 2, Jul93, pp. 145-157.
Precaución: Estas citas no son 100% exactas.