Rojanadhamkul, Nirassiri, Jirawan Klommek, and Jarurat Sriratanaprapat. “Social Activities Participation of Elder Persons in Muak Lek Subdistrict, Muak Lek District, Saraburi Province”. Journal of Health and Nursing Research (Journal of Boromarajonani College of Nursing, Bangkok) 36, no. 2 (August 2, 2020): 15-25. Accessed October 29, 2020. https://he01.tci-thaijo.org/index.php/bcnbangkok/article/view/244312.