Cita APA (7a ed.)
Leinster, M. S.O.S. From Three Worlds. Ace Books.
Cita estilo Chicago (17a ed.)
Leinster, Murray. S.O.S. From Three Worlds. Nueva York, EUA: Ace Books.
Cita MLA (9a ed.)
Leinster, Murray. S.O.S. From Three Worlds. Ace Books.
Precaución: Estas citas no son 100% exactas.