Alagappan, Kumar; Holliman, C. James (2005). "History of the Development of International Emergency Medicine". Emergency Medicine Clinics of North America. 23 (1): 1–10. doi:10.1016/j.emc.2004.09.013. PMID15663970.
Alagappan, Kumar; Holliman, C. James (2005). "History of the Development of International Emergency Medicine". Emergency Medicine Clinics of North America. 23 (1): 1–10. doi:10.1016/j.emc.2004.09.013. PMID15663970.