Parragon Publishing. (2007). My First Encyclopedia (Children's Reference). Parragon Publishing.
Cita Chicago (17th ed.)Parragon Publishing. My First Encyclopedia (Children's Reference). Parragon Publishing, 2007.
Cita MLA (9th ed.)Parragon Publishing. My First Encyclopedia (Children's Reference). Parragon Publishing, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.