| A poem on the downfall of the Gaoidhil | | Article in Journal | | 1969 |
| A religious poem ascribed to Muiredhach Ó Dálaigh | | Article in Journal | | 1979 |
| A religious poem ascribed to Muiredhach Ó Dálaigh | Gillies, WilliamÓ Dálaigh, Muiredhach | Article in Journal | | 1980 |
| An Irish manuscript in Scotland | Gillies, William | Article in Journal | | 1978 |
| Arthur in Gaelic Tradition, Part 1 : Folktales and Ballads | Gillies, William | Article in Journal | | 1981 |
| Editing and adaptation in the Book of the Dean of Lismore : a worked example | Gillies, William | Article in Book | | 2025 |
| Music and Gaelic strict-metre poetry | Gillies, William | Article in Journal | | 2010 |
| Scottish Gaelic | Gillies, William | Article in Book | | 2010 |
| The classical Irish poetic tradition | Gillies, William | Article in Book | | 1986 |
| The dánta grá and the Book of the Dean of Lismore | Gillies, William | Article in Book | | 2016 |