APA (7th ed.) Citation

Pennypacker, S., Brown, J., & Pamintuan, M. (2009). The Mount Rushmore calamity (1st Harper Trophy ed.). HarperCollins.

Chicago Style (17th ed.) Citation

Pennypacker, Sara, Jeff Brown, and Macky Pamintuan. The Mount Rushmore Calamity. 1st Harper Trophy ed. New York, NY: HarperCollins, 2009.

MLA (8th ed.) Citation

Pennypacker, Sara, et al. The Mount Rushmore Calamity. 1st Harper Trophy ed. HarperCollins, 2009.

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