Bark-book (pustaha) in Batak Language, GTM-0066, Box: GTM Shared Box 39. Georgetown University Manuscripts.
Bark-book (pustaha) in Batak Language, GTM-0066, Box: GTM Shared Box 39. Georgetown University Manuscripts. https://findingaids.library.georgetown.edu/repositories/15/resources/12837 Accessed December 22, 2024.