Davis, G., & Willow, A. (1974). Doctor who and the cybermen. Target.
Lua i Stíl Chicago (17ú heag.)Davis, Gerry, agus Alan Willow. Doctor Who and the Cybermen. London: Target, 1974.
Lua MLA (9ú heag.)Davis, Gerry, agus Alan Willow. Doctor Who and the Cybermen. Target, 1974.
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