Henri Helynt yn dial /
Simon, Francesca.
Meek, Elin.
Ross, Tony.
Aberystwyth : Y Ganolfan Astudiaethau Addysg,
2007.
Argraffiad Saesneg gwreiddiol = Original English edition : London : Orion Publishing, 2001.
Addasiad Cymraeg gan = Welsh adaptation by : Elin Meek.
Horrid Henry (Fictitious character)
Children's stories, Welsh.
Disorderly conduct