Cita APA (7th ed.)

Christie, A. (2003). Problem at Pollensa bay (Agatha Christie signature ed.). HarperCollins.

Cita Chicago (17th ed.)

Christie, Agatha. Problem at Pollensa Bay. Agatha Christie signature ed. London: HarperCollins, 2003.

Cita MLA (9th ed.)

Christie, Agatha. Problem at Pollensa Bay. Agatha Christie signature ed. HarperCollins, 2003.