| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Quick Reference Guide for Using Essential Oils 11th Edition November 2008 | 978-0-9706583-7-1 (0-9706583-7-0) | 2008 |
| Quick Reference Guide for Using Essential Oils | 978-0-9706583-1-9 (0-9706583-1-1) | 1998 |
| Reference Guide for Essential Oils | 978-0-9706583-0-2 (0-9706583-0-3) | 2001 |
A.A. · A. H. · Alan H. · Alan Higley · C.A. · C.H. · Connie Higley