Winyangkul, P., and W. Ruankham. “PREVALENCE AND FACTORS PREDICTING DEPRESSION AMONG PEOPLEINPHAYAMENGRAI MUNICIPALITY, PHAYAMENGRAI DISTRICT, CHIANG RAI PROVINCE”. Life Sciences and Environment Journal, vol. 18, no. 1, Apr. 2017, pp. 51-60, https://ph01.tci-thaijo.org/index.php/psru/article/view/58078.