| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Kalangwan: A survey of old Javanese literature | 978-90-247-1674-6 (90-247-1674-8) | 1974 |
| Old Javanese-English Dictionary | 978-90-247-6178-4 (90-247-6178-6) | 1983 |
| Pantheism and Monism in Javanese Suluk Literature: Islamic and Indian Mysticism in an Indonesian Setting | 978-90-6718-082-5 (90-6718-082-3) | 1995 |