バタク・トバ語
1 2 柴田紀男(2001)「バタク文字」『世界文字辞典』(言語学大辞典,別巻,三省堂)735頁
↑ Tuuk, H. N. van der (1971) A grammar of Toba Batak. (The Hague, Nijhoff) p.7
↑ Tuuk, H. N. van der (1971) A grammar of Toba Batak. (The Hague, Nijhoff) p.84