| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Ivies | 978-0-304-32059-2 | 1980 | |
| Pelargoniums | 978-0-304-32037-0 | 1993 | |
| Pelargoniums | 978-0-304-31100-2 | 1985 | |
| Pelargoniums: A Step-by-step Handbook for Cultivation and Care | 978-1-85967-594-6 | 1998 | Blaise Cooke |