| title | media type | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Music and the Celtic Otherworld: From Ireland to Iona | Hardcover | 978-0-312-23241-2 | 2000 | |
| Music and the Celtic Otherworld: From Ireland to Iona | Paperback | 978-1-902930-09-1 | 2000 | |
| The Quest for the Celtic Key | " | 978-1-84282-084-1 | 2005 | Ian R. Robertson |
| The Quest for the Celtic Key | " | 978-1-84282-031-5 | 2003 | Ian Robertson |
| The Quest for the Celtic Key | Hardcover | 978-0-946487-73-8 | 2002 | Ian R. Robertson |
K.M. · K. R. · Karen M. · Karen MacLeod · Karen Ralls · R. M. · R. MacLeod · Ralls-Macleod Karen
Luath Press Ltd · Polygon at Edinburgh University Press · St. Martin's Press