Ikuma Katsumi. A Study of Sleeping habits and Health of University Students : A comparison of full-time department Students and night program Students. 2013. 11. 2. 61-77
JAPAN SOCIETY OF HUMAN GROWTH AND DEVELOPMENT
, JAPAN SOCIETY OF PHYSICAL EXERCISE AND SPORTS SCIENCE
, HOKKAIDO SOCIETY OF PHYSICAL EDUCATION, HEALTH AND SPORTS SCIENCES
, JAPAN SOCIETY OF PHYSICAL EDUCATION,HEALTH AND SPORT SCIENCES