Abby Klein. (2011). "Ready, Freddy! #23: A Very Crazy Christmas" (Original.). Scholastic Paperbacks.
Cita Chicago (17th ed.)Abby Klein. "Ready, Freddy! #23: A Very Crazy Christmas". Original. Scholastic Paperbacks, 2011.
Cita MLA (9th ed.)Abby Klein. "Ready, Freddy! #23: A Very Crazy Christmas". Original. Scholastic Paperbacks, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.