Roberts Rinehart Publishers. ISBN 1-57098-138-8. p.54 1 2 3 Clark, Rosalind (1991) The Great Queens: Irish Goddesses from the Morrígan to Cathleen Ní Houlihan (Irish Literary Studies, Book 34) Savage, Maryland, Barnes and Noble (reprint) pp.5, 8, 17, 25 1 2 3 http://www.etymonline.com/index.php?term=hag ↑ hag1 The American Heritage Dictionary of the English Language: Fourth Edition (2000) ↑ Based on a Google Book search of the exact phrase "hag or crone" and "crone or hag".