Cita APA (7th ed.)

Christie, A. (1948). The murder at the vicarage. Penguin Books.

Cita Chicago (17th ed.)

Christie, Agatha. The Murder at the Vicarage. Harmondsworth: Penguin Books, 1948.

Cita MLA (9th ed.)

Christie, Agatha. The Murder at the Vicarage. Penguin Books, 1948.