ISO 639-3ISO 639-3:2007 is an international standard for natural language codes, offering three-letter codes for every single language and language variety: mga

MW category

category children (down)

category parents (up)

Form

 

Bibliography

Some publications
McCone, Kim, “Chapter 12: A basic introduction to Middle Irish”, in: McCone, Kim, A first Old Irish grammar and reader: including an introduction to Middle Irish, Maynooth Medieval Irish Texts 3, Maynooth: Department of Old and Middle Irish, 2005. 173–217.
McCone, Kim, “Prehistoric, Old and Middle Irish”, in: McCone, Kim R., and Katharine Simms (eds.), Progress in medieval Irish studies, Maynooth: Department of Old Irish, St. Patrick's College, 1996. 7–53.
Mac Eoin, Gearóid, “The dating of Middle Irish texts [Sir John Rhŷs Memorial Lecture 1981]”, Proceedings of the British Academy 68 (1982): 109–137. 
comments: Series: Sir John Rhŷs Memorial Lectures
Mac Gearailt, Uáitéar, “Zum Irischen des 12. Jahrhunderts”, Zeitschrift für celtische Philologie 43 (1989): 11–52.