P.E. · P E. S · P S · Peter E.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Guide to Statistical Analysis Using SPSS V. 12 and Microsoft Excel | 978-0-07-312532-9 (0-07-312532-6) | 2005 |
| Guide to Statistical Analysis Using SPSS V. 12 and Microsoft Excel | 978-0-07-339629-3 (0-07-339629-X) | 2004 |