1. Aizuchi-ron (in Japanese) [on backchannels];Mizutani Nobuko;Nihongogaku (Japanese Linguistics),1988
2. Kyoowa'kara ‘taiwa'e (in Japanese) [from ‘kyoowa'to ‘taiwa’];Mizutani Nobuko;Nihongogaku (Japanese Linguistics),1993
3. The problem of meaning in primitive languages. The meaning of meaning (eds) CK Ogden & IA Richards. London;Malinowski Bronisław;Kegan Paul, Trench and Trubner.,1923
4. Dunbar, R. I. M. 1996. Grooming, gossip, and the evolution of language. Harvard University Press.
5. Nodding, aizuchi, and final particles in Japanese conversation: How conversation reflects the ideology of communication and social relationships