Syntax of Welsh, the. Cambridge Syntax GuidesRobert D. Borsley, Maggie Tallerman, David Willis · First published 2008Open the Tome
Syntax of the Celtic LanguagesRobert D. Borsley, Roberts, Ian · First published 1996 · Latest edition 2005Open the Tome
Welsh Negation And Grammatical TheoryROBERT D. BORSLEY, Bob Morris Jones · First published 2005Open the Tome