Hiroki Shinkawa and Tadaaki Tomiie , The Age Difference in Social Skills Constructs for School Adaptation: A Cross-Sectional Study of Japanese Students at Elementary, Junior, and Senior High Schools . journal = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology. June 2015, vol. 102(6). 1974 - 1978 [viewed 21 September 2024]. Available from: https://publications.waset.org/pdf/10001796.