APA (7th ed.) Citation

Ward, D. J., & Lowery, M. (2015). Simple machines (First edition.). Harper, an imprint of HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Ward, D. J., and Mike Lowery. Simple Machines. First edition. New York, NY: Harper, an imprint of HarperCollins Publishers, 2015.

MLA (8th ed.) Citation

Ward, D. J., and Mike Lowery. Simple Machines. First edition. Harper, an imprint of HarperCollins Publishers, 2015.

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