Descriptive materials of morphosyntactic microvariation in Bantu
Research Institute for Languages and Cultures of Asia and Africa, Tokyo University of Foreign Studies 2019 ISBN:9784863372979
Proceedings of the 8th World Congress of African Linguistics Kyoto 2015
Research Institute for Languages and Cultures of Asia and Africa (ILCAA), Tokyo University of Foreign Studies 2017 ISBN:9784863372337
大修館書店 2009 ISBN:9784469012798
Lectures and oral presentations (12)：
Support for multi-language learning: a case of OU Multilingual Plaza at Osaka University
(JASAL2020 National Conference 2021)
Bantuization and Swahilization in Mbugu/Ma’a
(8th International Conference on Bantu Languages 2021)
Swahilization in Mbugu: One-directional grammatical change induced by contact between Mbugu and Swahili
(Sociolinguistic Perspective on Variation in Swahili 2019)
The present-day linguistic/sociolinguistic situation in Mbugu/Ma’a.
(9th World Congress of African Linguistics 2018)
Grammatical change in the ethnic languages induced by contact with Swahili: A case of Mbugu (Ma’a).
(Baraza Swahili 2017)