Burdick, E. a. W. (1962). Fail-safe. The Companion Book Club.
Lua i Stíl Chicago (17ú heag.)Burdick, Eugene and Wheeler. Fail-safe. Londres, Inglaterra: The Companion Book Club, 1962.
Lua MLA (9ú heag.)Burdick, Eugene and Wheeler. Fail-safe. The Companion Book Club, 1962.
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