Hughes, H. (2014). Outer limits: The filmgoers' guide to the great science-fiction films. I.B.Tauris & Co. Ltd.
Lua i Stíl Chicago (17ú heag.)Hughes, Howard. Outer Limits: The Filmgoers' Guide to the Great Science-fiction Films. London, England ; New York, New York: I.B.Tauris & Co. Ltd, 2014.
Lua MLA (9ú heag.)Hughes, Howard. Outer Limits: The Filmgoers' Guide to the Great Science-fiction Films. I.B.Tauris & Co. Ltd, 2014.
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