Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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

Precaución: Estas citas no son 100% exactas.