| Adiutor laborantium : a poem by Adomnán? | Márkus, Gilbert | Article in Book | | 2010 |
| Adomnán, two saints, and the paschal controversy | Márkus, Gilbert | Article in Journal | | 2017 |
| Diormit : Columba's right-hand man | Márkus, Gilbert | Article in Journal | | 2009 |
| Four blessings and a funeral: Adomnán's theological map of Iona | Márkus, Gilbert | Article in Journal | | 2021 |
| Iona : the earliest poetry of a Celtic monastery | Clancy, Thomas OwenMárkus, Gilbert | Monograph or Collective Volume | Edinburgh University Press | 1994 |
| Pelagianism and the "Common Celtic Church" | Márkus, Gilbert | Article in Journal | | 2005 |
| The bibles of Saint Columba | Márkus, Gilbert | Article in Journal | | 1993 |
| The sick and the dying in the Book of Deer | Márkus, Gilbert | Article in Book | | 2008 |
| What were Patrick's alphabets? | Márkus, Gilbert | Article in Journal | | 1996 |