L -H · W H · W.L. · Willetta Heising
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Detecting Women: A Readers Guide and Checklist for Mystery Series Written by Women | 978-0-9644593-0-4 (0-9644593-0-2) | 1994 |
| Willetta's Guide to Police Detective Series | 978-0-9644593-8-0 (0-9644593-8-8) | 2004 |
| Willetta's Guide to Private Eye Novels | 978-0-9644593-9-7 (0-9644593-9-6) | 2003 |