Hiroaki Ogata, Sanae Yamasaki. Practice and Analysis of Heart Questionnaire -Various psychological factors that affect children's and students' willingness to attend school-. Kyushu Lutheran College Research Reports Number 50. 2020. 50
OGATA HIROAKI. Utilization of Heart Questionnaire -About Contents, Characteristics, Significance and Method of Use -. Kyushu Lutheran College Research Reports Number 49. 2020. 49