Davis, N. (1954). Do a dame a favour? Ellery Queen's Mystery Magazine.
Lua i Stíl Chicago (17ú heag.)Davis, Norbert. "Do a Dame a Favour?" Ellery Queen's Mystery Magazine 1954.
Lua MLA (8ú heag.)Davis, Norbert. "Do a Dame a Favour?" Ellery Queen's Mystery Magazine, 1954.
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