Plaimee, Preeyaporn, Ratklaow Mititraporn, Warangphat Nuangjumnong, Nutjaree Pratheepawanit Johns, and Jeffrey Johns. “Comparison of Melatonin Levels, Sleep Quality and Alertness Between Nurses Working Night Shift and Day Shift”. Srinagarind Medical Journal 27, no. 4 (August 23, 2013): 393–400. Accessed November 1, 2024. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/11143.