000个。[來源請求] 相對於音位,且不同於字形(glyph)、字型(font)或字體(typeface)。 Coulmas, F. (1996), The Blackwell's Encyclopedia of Writing Systems, Oxford: Blackwells, p.174 Altmann, G
[2024-02-19]. (原始内容存档于2022-09-29). Awards: Arthur C. Clarke Winner; Blackwell's Books of the Year. Shelf Awareness. October 27, 2022 [2022-11-27]. (原始内容存档于2023-03-26)