| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Nidahas Śrī Laṅkāvē vidēśa pratipattiya, 1948-1970 | 978-955-9496-02-1 (955-9496-02-6) | 1998 |
| SAARC: Towards regional co-operation: Colombo summits, 1991 & 1998 | 978-955-9496-03-8 (955-9496-03-4) | 1999 |
| Sri Lanka and non-alignment: A study of foreign policy from 1948 to 1982 | 978-955-9496-00-7 (955-9496-00-X) | 1997 |