1. Burton, S.K. (2011). “English makes me act in a different way”: To what extent can a change of language affect speech and behavior? The Language Teacher, 35(3), 31-36.
2. Imaida, A. (2006). Wakai nihonjosei no pitch henka ni miru bunkateki kihan no eikyou – Analyse der Tonhohe bei jungen japanischen Frauen. Gengo Bunka Ronshu, Nagoya University Department Bulletin, 27(2), 13-26.
3. McKinley, J. and Sakamoto, M. (2007). Exploring language + identity: Nature of code-switching among Japanese students. Bulletin of the Faculty of Foreign Studies, Sophia University, 42, 1-28.
4. Ohara, Y. (1992). Gender-dependent pitch levels: A comprehensive study in Japanese and English. Kira Hall & Mary Bucholtz & Birch Moonwomon (Eds.), Locating power: Proceedings of the Second Berkeley Women and Language Conference, Berkeley: Berkeley Women and Language Group, Linguistics Department, University of California, 469-477.
5. Raynolds, K. (1985). Female speakers of Japanese. Feminist Issues, 5(2), 13-46.
6. Shibamoto, J. (1985). Japanese women’s language: As spoken by women, as spoken by men. Proceeding of the First Berkeley Women and Language Conference, Berkely Women and Language Group, Linguistics Department, University of California, 171-182.
7. Tomoto, Y. (2015). A study of how bilingual speakers of Japanese and English are affected by the language they use. Studies in Comparative Culture, The Japan Association of Comparative Culture 118, 139-154.