Manprasert, Janjira, Jariya Wittayasooporn, and Tipawan Daramas. 2023. “Effects of the Two Oral Stimulations on Breast-Feeding Performance in Preterm Infants”. Nursing Research and Innovation Journal 29 (2). https://he02.tci-thaijo.org/index.php/RNJ/article/view/251559.