| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2010 | 978-1-907709-00-5 | John W. Hummel | Rail Ale Guide South West |
| 2015 | 978-1-907709-01-2 | Teboga Mamabolo Hummel | About & Paper: 1: Bristol - A City Guide |
| '' | 978-1-907709-02-9 | '' | Journal Paper: 1: Bristol City Guide |