Ketsuwan, S., N. Baiya, K. Maelhacharoenporn, and K. Raungrongmorakot. “Comparison of latch scores between tube and cup feeding methods”. Journal of Medicine and Health Sciences, vol. 21, no. 2, Oct. 2014, pp. 58-67, https://he01.tci-thaijo.org/index.php/jmhs/article/view/58667.