Ó Néill, S., & O'Neill, S. Gaelic writing (Séamus Ó Néill is guest editor of this special issue).
Chicago Style (17th ed.) CitationÓ Néill, Séamus, and Séamus O'Neill. Gaelic Writing (Séamus Ó Néill Is Guest Editor of This Special Issue).
MLA (9th ed.) CitationÓ Néill, Séamus, and Séamus O'Neill. Gaelic Writing (Séamus Ó Néill Is Guest Editor of This Special Issue).
Warning: These citations may not always be 100% accurate.