Vasaroangrong, T., Singhatanadgid, W., Chitsakul, K., Suwan, S., Pamornphol, S., Sawasdipanich, N. and Janthorn, S. 2025. Development of a Training Manikin for Intramuscular Injection into the Gluteal Muscle*. Nursing Research and Innovation Journal. 31, 2 (Aug. 2025). DOI:https://doi.org/10.63647/nrij.v31i1.272043.