Links (online guides)
==Bibliographies==
Bibliography of Irish Linguistics and Literature (BILL), School of Celtic Studies, Dublin Institute for Advanced Studies.
Celtic Studies Bibliography, Celtic Studies Association of North America (CSANA).
RI-Opac: Literature Database for the Middle Ages, Regesta Imperii.
Online Medieval Sources Bibliography, Center for Medieval Studies, Fordham University.
Sharon L. Krossa, Scottish Medieval Bibliography, medievalscotland.org.
Charles D. Wright, Old Irish and Early Christian Ireland: A Basic Bibliography.
British and Irish archaeological bibliography (BIAB), The British Academy.
Subscription only
Indexed journals, Iter: Online Bibliography.
Indexed essays, Iter: Online Bibliography.
International Medieval Bibliography, Brepols.
==Guides==
Lisa Spangenberg, Celtic Studies Resources / Digital Medievalist.