Ritmun, Nureeha, and Anchalee Inthasorn. 2012. “Effect of Positioning Breastfeeding on Pain Level and Latch-on for Cesarean Patients”. Journal of Research in Nursing-Midwifery and Health Sciences 32 (3):37-50. https://he02.tci-thaijo.org/index.php/nur-psu/article/view/4591.