Pecyn Hunan Ddewis ar Gyfer y Gwasanaeth Heddlu.
Great Britain.Home Office.
[London] : Home Office Communication Directorate,
2003.
"Allech Chi? yr Heddlu"
Pamffled Recriwtio yr Heddlu - Holiadur Hunan Ddewis - Ffurflen Monitro Ymateb A - Cysylltiadqau Heddlu Lleol.