GUM3C : cyd-ddealltwriaeth fyd-eang mewn cyd-destunau amlieithog, amlfodd ac amlgyfrwng, Prifysgol Bangor, 22-23 Awst 2008 = GUM3C : global understanding in multilingual, multimodal and multimedia con. ISBN 9781842201152. Published by Uned Technolegau Iaith in 2008. Publication and catalogue information, links to buy online and reader comments.