Cita APA (7a ed.)

Sheldon, S. (2001). The sky is falling. Compass Press, HarperCollins Publishers.

Cita Chicago Style (17a ed.)

Sheldon, Sidney. The Sky Is Falling. London ; Oxford ; Melbourne: Compass Press, HarperCollins Publishers, 2001.

Cita MLA (8a ed.)

Sheldon, Sidney. The Sky Is Falling. Compass Press, HarperCollins Publishers, 2001.

Precaución: Estas citas no son 100% exactas.