prommul, jirarat, W. Nelson, C. Perngyai, C. Klerlhee, K. Intaranarong, and T. Mangme. “The Development and Effectiveness of the Innovation ‘4 in 1 Infant Manikin’ Intradermal Injection in Infants”. Princess of Naradhiwas University Journal, vol. 18, no. 2, June 2026, pp. 330-55, https://li01.tci-thaijo.org/index.php/pnujr/article/view/271413.