Pattanasombutsook, M., B. Punthmatharith, S. Chunuan, M. Hayter, and M. E. Graham. “Prenatal Attachment Among Thai Pregnant Adolescents: A Qualitative Study”. Journal of Research in Nursing-Midwifery and Health Sciences, vol. 40, no. 1, Mar. 2020, pp. 1-14, https://he02.tci-thaijo.org/index.php/nur-psu/article/view/240686.