| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Septic Tank Options and Alternatives: Your Guide to Conventional Natural and Eco-friendly Methods and Technologies | 978-1-85623-208-1 (1-85623-208-5) | 2014 |
| Towards Zero Waste: How to live a circular life | 978-1-85623-328-6 (1-85623-328-6) | 2019 |