Studies in Early Japanese Morphophonemics
(Bloomington: Indiana University Linguistics Club, 1977; 2nd ed. 1993)
With F. C. Lorish, M. Noda, Y. Wada
A Framework for Introductory Japanese Language Curricula in American High Schools and Colleges
(Washington, D.C.: National Foreign Language Center, 1993)
The Fifth Generation Fallacy
(New York: Oxford University Press, 1987)
Literacy and Script Reform in Occupation Japan
(New York: Oxford University Press, 1996)
Ideogram: Chinese Characters and the Myth of Disembodied Meaning
(Honolulu: University of Hawai'i Press, 2004)
The Role of Contact in the Origins of the Japanese and Korean Languages
(Honolulu: University of Hawai'i Press, 2009)
Sangaku Proofs: a Japanese Mathematician at Work
(Ithaca: Cornell East Asia Series, 2015)
Sangaku Reflections: a Japanese Mathematician Teaches
(Ithaca: Cornell East Asia Series, 2017)