prommul, jirarat, Nelson, W., Perngyai, C., Klerlhee, C., Intaranarong, K. and Mangme, T. 2026. The Development and Effectiveness of the Innovation “4 in 1 Infant Manikin” Intradermal Injection in Infants. Princess of Naradhiwas University Journal. 18, 2 (Jun. 2026), 330–355.