Cita APA (7th ed.)

Adam Hibbert. (2006). Mighty Machines (Q & A Reference). Parragon Plus.

Cita Chicago (17th ed.)

Adam Hibbert. Mighty Machines (Q & A Reference). Parragon Plus, 2006.

Cita MLA (9th ed.)

Adam Hibbert. Mighty Machines (Q & A Reference). Parragon Plus, 2006.

Atenció: Aquestes cites poden no estar 100% correctes.