D. Geraint Lewis – författare

Arddodiaid, Yr

A Comprehesive Collection of Welsh Prepositions

Ansoddeiriau, Yr - A Comprehensive Collection of Welsh Adjectives

A Comprehensive Collection of Welsh Adjectives

Y Diarhebion - Casgliad o Ddiarhebion Cyfoes / A Compendium of Contemporary Welsh Proverbs

Casgliad o Ddiarhebion Cyfoes Cymraeg / A Compendium of Contemporary Welsh Proverbs

Rhifolion, Y / Welsh Numerals

Beginners' Welsh Reading Dictionary

Common Welsh Words with Mutated and Other Forms, Especially for Learners and Non-Welsh Speakers

D.I.Y. Welsh WITH ANSWERS

Your step-by-step guide to building Welsh sentences

Adferfau - Disentangling the Welsh adverb

Disentangling the Welsh adverb

How Do You Say...? - A checklist of Welsh phrases, expressions, exclamations and sayings

A checklist of Welsh phrases, expressions, exclamations and sayings

Mewn Geiriau Eraill - Thesawrws i Blant

Thesawrws i Blant

Welsh-English Dictionary, English-Welsh Dictionary

Treigladur, Y - A Check-List of Welsh Mutations (Argraffiad Newydd)

Geiriadur Cynradd Gomer