| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2005 | 978-0-9769124-0-8 | Howard F., Jr. Loomis | Enzymes: The Key to Health, Vol. 1 (The Fundamentals) |
| 2015 | 978-0-9769124-1-5 | Howard F Loomis Jr. ยท Arnold Mann | The Enzyme Advantage: For Health Care Providers And People Who Care About Their Health |