สุนทร ท., & ประจุศิลป ก. (2018). Relationships between self- directed learning, leadership of head nurse and performance of nurse anesthetists, General hospitals, Ministry of Public Health. Journal of The Royal Thai Army Nurses, 19, 477–486. retrieved from https://he01.tci-thaijo.org/index.php/JRTAN/article/view/134922