| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Flowering Plant Families in East Africa: An Introduction to Plant Taxonomy | 978-9966-46-490-3 (9966-46-490-5) | 1994 | |
| Medicinal Plants of East Africa. Third Edition | 978-9966-846-84-6 (9966-846-84-0) | 2009 | John O. Kokwaro |