S. G. ยท Stephen G.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| A Service Engineers Guide to the Vox AC30 Valve Amplifier | 978-0-9552167-0-1 (0-9552167-0-2) | 2006 |
| A Service Engineers Guide to the Vox AC30 Valve Amplifier | 978-0-9552167-1-8 (0-9552167-1-0) | 2006 |
| A Service Engineer's Guide to the Vox AC30 Valve Amplifier: Includes the AC15, AC10 and AC4 amplifiers | 978-0-9552167-2-5 (0-9552167-2-9) | 2008 |