W. H. Freeman · Worth Publishers Inc.,U.S.
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Focus on Psychology | 978-0-7167-5163-2 | 2002 | |
| Focus on Psychology: A Guide to Mastering Peter Gray's Psychology | 978-1-4292-3089-6 | 2010 | |
| Focus on Psychology: A Guide to Mastering Peter Gray's Psychology | 978-0-7167-4585-3 | 2006 | Peter O. Gray |
| Focus on Psychology- A Guide to Mastering Peter Gray's Psychology - Third Edition | 978-1-57259-701-3 | 1998 | |