von Bormann, S.; Wichaikull, S.; Turner, K.; Soonthorn, S.; Khamwong, W.; Ritruechai, S.; Tippayaphalapholgul, B. Relationship between Personal Factors, Attitude, Knowledge and English Skills of Health Professionals Working in Health Service Regions, the Thai Ministry of Public Health. NJPH (วารสาร พ.ส.) 2021, 31, 199-210.