Cita APA (7a ed.)
Christie, A. By the Pricking of My Thumbs. Pocket Books.
Cita estilo Chicago (17a ed.)
Christie, Agatha. By the Pricking of My Thumbs. Nueva York, EUA: Pocket Books.
Cita MLA (9a ed.)
Christie, Agatha. By the Pricking of My Thumbs. Pocket Books.
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