Dan Suwannaruji. (2009) Personal Aspects and Physical Fitness Improvement: of Police Officers in Nonthaburi Province. <i>Journal of Medicine and Health Sciences</i>, <i>16</i>(2), 58-72.Dan Suwannaruji. "Personal Aspects and Physical Fitness Improvement: of Police Officers in Nonthaburi Province". Journal of Medicine and Health Sciences 16 (2009):58-72.Dan Suwannaruji. Personal Aspects and Physical Fitness Improvement: of Police Officers in Nonthaburi Province. Faculty of Medicine,Srinakharinwirot University:ม.ป.ท. 2009.