Partridge, J., & Voce, S. (2001). Four scary monsters. Cambridge University Press.
Cita Chicago (17th ed.)Partridge, Juliet, i Stella Voce. Four Scary Monsters. Cambridge: Cambridge University Press, 2001.
Cita MLA (8th ed.)Partridge, Juliet, i Stella Voce. Four Scary Monsters. Cambridge University Press, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.