Stroud, J. (2013). Lockwood & Co. - The Screaming Staircase. Random House Children's Publisher.
Cita Chicago (17th ed.)Stroud, Jonathan. Lockwood & Co. - The Screaming Staircase. London: Random House Children's Publisher, 2013.
Cita MLA (9th ed.)Stroud, Jonathan. Lockwood & Co. - The Screaming Staircase. Random House Children's Publisher, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.