Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Warning: These citations may not always be 100% accurate.