Dahl, R. (1979). Tales of the unexpected. Penguin Books.
Cita Chicago (17th ed.)Dahl, Roald. Tales of the Unexpected. Harmondsworth: Penguin Books, 1979.
Cita MLA (8th ed.)Dahl, Roald. Tales of the Unexpected. Penguin Books, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.