Independently published · Various small imprints
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Quantitative Analysis: with JASP open-source software | 978-1-6602-2818-8 (1-6602-2818-2) | 2020 |
| The PSPP Guide : An Introduction to Statistical Analysis | 978-0-692-31324-4 (0-692-31324-9) | 2014 |
| The PSPP Guide : An Introduction to Statistical Analysis | 978-0-692-31363-3 (0-692-31363-X) | 2014 |
C.H. · C.P. · Christopher H. · D.C. · D. Christopher · D,. H.. · D. P. · Dr.P · P. H. · P. Halter