Estos son los registros de libros publicados por William Horwood Hay MD.
| ISBN | Título | Editorial | Autor(es) | Año |
|---|---|---|---|---|
| 978-9962-671-11-4 | Superior Health Through Nutrition, Paperback Edition | Universal Books & Media | William Horwood Hay MD | 2008 |
| 978-9962-675-04-4 | Superior Health Through Nutrition, Paperback Edition | Rhino Publishing | William Horwood Hay MD | 2008 |
| 978-9962-675-22-8 | Superior Health Through Nutrition, E-Book Edition | Rhino Publishing | William Horwood Hay MD | 2008 |