Amonrat Sukkul และ Sukcharoen Tangwongchai. (2019) Cognitive reserve in retired employees at internal medicine outpatient clinic, Metropolitan Electricity Authority Hospital. <i>Chulalongkorn Medical Bulletin</i>, <i>1</i>(5), 501-513.Amonrat Sukkul และ Sukcharoen Tangwongchai. "Cognitive reserve in retired employees at internal medicine outpatient clinic, Metropolitan Electricity Authority Hospital". Chulalongkorn Medical Bulletin 1 (2019):501-513.Amonrat Sukkul และ Sukcharoen Tangwongchai. Cognitive reserve in retired employees at internal medicine outpatient clinic, Metropolitan Electricity Authority Hospital. Faculty of Medicine Chulalongkorn University:ม.ป.ท. 2019.