Vasaroangrong, Tidarat, Wilaiporn Singhatanadgid, Kittiphol Chitsakul, Supakorm Suwan, Siriphan Pamornphol, Nantaga Sawasdipanich, and Sirijit Janthorn. “Development of a Training Manikin for Intramuscular Injection into the Gluteal Muscle*”. Nursing Research and Innovation Journal 31, no. 2 (August 28, 2025). accessed September 18, 2026. https://he02.tci-thaijo.org/index.php/RNJ/article/view/272043.