Cita APA (7th ed.)

Christie, A. (1971). By the pricking of my thumbs. Fontana ; Collins.

Cita Chicago (17th ed.)

Christie, Agatha. By the Pricking of My Thumbs. London: Fontana ; Collins, 1971.

Cita MLA (8th ed.)

Christie, Agatha. By the Pricking of My Thumbs. Fontana ; Collins, 1971.