H.A. · H.J. · Herman J Ader · J. A.
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Advising on research methods: a consultant's companion | 978-90-79418-02-2 (90-79418-02-1) | 2008 | G.J. Mellenbergh · David J. Hand |
| Advising on research methods: selected topics 2011 | 978-90-79418-13-8 (90-79418-13-7) | 2011 | H.J. Adèr · G.J. Mellenbergh |