Cita APA (7a ed.)
Bradley, M. Z., & Laumer, K. Seven from the Stars. Ace Books.
Cita estilo Chicago (17a ed.)
Bradley, Marion Zimmer, y Keith Laumer. Seven from the Stars. Nueva York, EUA: Ace Books.
Cita MLA (9a ed.)
Bradley, Marion Zimmer, y Keith Laumer. Seven from the Stars. Ace Books.
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