| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| A NATIONAL ELECTRICAL CODE STUDY REFERENCE BASED ON THE 2008 NEC | 978-0-9822975-1-3 (0-9822975-1-3) | 2009 |
| A National Electrical Code Study Reference Based on the 2011 NEC | 978-0-9831358-1-4 (0-9831358-1-9) | 2011 |
| Electrical Theory: Simply Explained-Thoroughly Understood | 978-0-9831358-0-7 (0-9831358-0-0) | 2011 |
A. J. · A. W. · A. Walker · Alvin Walker · J. W. · J. Walker