| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| The Six-Hour Day and Other Industrial Questions | Hardcover | 978-0-415-78986-8 | 2017 |
| The Six-Hour Day and Other Industrial Questions | Digital | 978-1-351-81925-1 | 2017 |
| The Six-Hour Day and Other Industrial Questions | " | 978-1-351-81926-8 | 2017 |
| The Six-Hour Day and Other Industrial Questions | " | 978-1-351-81927-5 | 2017 |