Kantaruksa, K., M. Urharmnuay, S. Yimyam, N. Sansiriphan, B. Supawitichpatana, N. Chaloumsuk, and P. Lerttrakannon. “Effects of a Breastfeeding Promotion, Support, and Protection Program for Registered Nurses in the Northern Thailand”. Nursing Journal CMU, vol. 47, no. 1, Mar. 2020, pp. 1-12, https://he02.tci-thaijo.org/index.php/cmunursing/article/view/240720.