Citazione Stile APA (7a Edizione)

Christie, A. <. (1971). Parker Pyne investigates = Parker Pyne ermittelt <engl.>: Agatha Christie (Unabridged.). Pan Books.

Citazione stile Chigago Style (17a edizione)

Christie, Agatha <1890-1976>. Parker Pyne Investigates = Parker Pyne Ermittelt <engl.>: Agatha Christie. Unabridged. London: Pan Books, 1971.

Citatione MLA (8a ed.)

Christie, Agatha <1890-1976>. Parker Pyne Investigates = Parker Pyne Ermittelt <engl.>: Agatha Christie. Unabridged. Pan Books, 1971.