Taonak, Tuangporn. “Comparison of Competency of Head Nurses Perceived by Head Nurses and by Professional Nurses in Bangkok Metropolitan Administration Administration (BMA) Medical College and Vajira Hospital”. Vajira Medical Journal : Journal of Urban Medicine 49, no. 2 (September 22, 2011): 83–93. accessed April 22, 2026. https://he02.tci-thaijo.org/index.php/VMED/article/view/253.