Somjai , Chanuttaporn, Kannika Kantaruksa, and Nonglak Chaloumsuk. 2020. “Effectiveness of Breastfeeding Self-Efficacy Enhancement: A Systematic Review”. Nursing Journal CMU 47 (2):227-39. https://he02.tci-thaijo.org/index.php/cmunursing/article/view/241842.