Ryan, J. (1976). Clonmacnois: A historical summary. Stationery Office the National Parks and Monuments Branch, Office of Public Works.
Chicago Style (17th ed.) CitationRyan, John. Clonmacnois: A Historical Summary. Dublin: Stationery Office the National Parks and Monuments Branch, Office of Public Works, 1976.
MLA (8th ed.) CitationRyan, John. Clonmacnois: A Historical Summary. Stationery Office the National Parks and Monuments Branch, Office of Public Works, 1976.
Warning: These citations may not always be 100% accurate.