1. Inkeles, A. (1997). National character. . New Brunswick: Transaction Publishers.
2. Hofstead, G., Hofstead, G. J., & Minkov, M. (2010). Culture and organizations–software of the mind. (3rd ed.). NY: McGraw-Hill.
3. Yoshino, R., & Osaki, H. (2013). Subjective social class, sense of satisfaction, and sense of trust–a note on psychological scales of social surveys [in Japanese]. Japanese Journal of Behaviormetrics, 40(2), 97–114. Retrieved January 11, 2016, from https://www.jstage.jst.go.jp/article/jbhmk/40/2/40_97/_article/-char/ja/.
4. Narens, L. (2002). Theories of meaningfulness. . London: LEA.
5. Yoshino, R. (2005). A time to trust in the East Asia–A Behaviormetric study on the sense of trust in the East Asia Values Survey. Japanese Journal of Behaviormetrics, 32(2), 147–160.