| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Progress and Uniformity in Child-Labor Legislation: A Study in Statistical Measurement | Hardcover | 978-0-656-94587-0 (0-656-94587-7) | 2018 |
| Progress and Uniformity in Child-Labor Legislation: A Study in Statistical Measurement | Paperback | 978-1-333-66639-2 (1-333-66639-X) | 2018 |