| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Fertility Awareness Mastery Charting Workbook: A Companion to The Fifth Vital Sign, Celsius Edition | 978-1-9994280-6-8 (1-9994280-6-4) | 2019 |
| Fertility Awareness Mastery Charting Workbook: A Companion to The Fifth Vital Sign, Fahrenheit Edition | 978-1-9994280-3-7 (1-9994280-3-X) | 2019 |
| The Fifth Vital Sign: Master Your Cycles & Optimize Your Fertility | 978-1-9994280-0-6 (1-9994280-0-5) | 2019 |