Winyuchakrit, I., and N. Taneepanichskul. “Premenstrual Syndrome and Sleep Quality Among Private Hospital Nurses in Bangkok, Thailand”. Journal of Health Research, vol. 31, no. Suppl. 2, Feb. 2018, pp. S217-224, https://he01.tci-thaijo.org/index.php/jhealthres/article/view/114555.