Terry Deary. (2010). Horrible Histories Annual 2011. Scholastic.
Cita Chicago (17th ed.)Terry Deary. Horrible Histories Annual 2011. Scholastic, 2010.
Cita MLA (9th ed.)Terry Deary. Horrible Histories Annual 2011. Scholastic, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.