Kmihito Kawada. Analysis on Children's Sports(6) Volleyball in two stages:Comparison between the elementary school and the junior high school. Bulletin of Tsukuba International University. 2010. 16. 55-71
Kimihito Kawada. Analysis on Children's Sports(5) Case study on winning a victory through scouting in volleyball. Bulletin of Tsukuba International University. 2008. 14. 61-72
Kimihito Kawada. Analysis on Schoolchildren's Sports(5) -Case study on winning a victory through scouting in volleyball-. Bulletin of Tsukuba International University. 2008. 14. 61-72