Cita APA (7th ed.)

McGowan, D. J. (1992). What makes things move?: Simple machines & motion. Encyclopedia Britannica Educational Corporation.

Cita Chicago (17th ed.)

McGowan, David J. What Makes Things Move?: Simple Machines & Motion. Chicago, Ill: Encyclopedia Britannica Educational Corporation, 1992.

Cita MLA (9th ed.)

McGowan, David J. What Makes Things Move?: Simple Machines & Motion. Encyclopedia Britannica Educational Corporation, 1992.