Cita APA (7a ed.)

Snicket, L., & Helquist, B. (2003). The slippery slope. HarperCollins.

Cita Chicago Style (17a ed.)

Snicket, Lemony, y Brett Helquist. The Slippery Slope. New York: HarperCollins, 2003.

Cita MLA (8a ed.)

Snicket, Lemony, y Brett Helquist. The Slippery Slope. HarperCollins, 2003.