Prasopkittikun, T., and P. Sangperm. “Self-Efficacy Promoting Interventions for Breastfeeding Outcomes: An Integrative Review of Research Conducted in Thailand”. Pacific Rim International Journal of Nursing Research, vol. 21, no. 1, Feb. 2017, pp. 44-58, https://he02.tci-thaijo.org/index.php/PRIJNR/article/view/65260.