| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Ultimate Guide to Singing 2nd Edition: Gigs, Sound, Money and Health | 978-0-9920344-2-9 (0-9920344-2-6) | 2016 |
| The Ultimate Guide to Singing: Gigs, Sound, Money and Health | 978-0-9920344-0-5 (0-9920344-0-X) | 2014 |