| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Rural Batak, kings in Medan: The development of Toba Batak ethno-religious identity in Medan, Indonesia, 1912-1965 | 978-91-85424-57-3 (91-85424-57-9) | 2000 |
J. H. · Jean Hasselschwert · Johan Hakelius · Johan Hesselstrand