1. Yir-Yoront ideophones;Alpher,1994
2. Atoda, T., & Hoshino, K. (1995). Giongo gitaigo tsukaikata jiten (Usage dictionary of sound/manner mimetics). Tokyo, Sotakusha.
3. Processes involved in the initial mapping of verb meanings;Behrend,1995
4. Language;Bloomfield,1984
5. Rime, assonance, and morpheme analysis;Bolinger;Word,1950