Cita APA (7th ed.)

Christie, A. (1953). Parker Pyne investigates. Penguin Books.

Cita Chicago (17th ed.)

Christie, Agatha. Parker Pyne Investigates. Londres: Penguin Books, 1953.

Cita MLA (9th ed.)

Christie, Agatha. Parker Pyne Investigates. Penguin Books, 1953.