Benjapak Sanghuaiprai และ Wisakha Phoochinda. (2020) Development model of the elderly's health service system towards the excellence of tertiary hospitals attached to the Royal Thai Navy. National Institute of Development Administration:ม.ป.ท.Benjapak Sanghuaiprai และ Wisakha Phoochinda. 2020. Development model of the elderly's health service system towards the excellence of tertiary hospitals attached to the Royal Thai Navy. ม.ป.ท.:National Institute of Development Administration;Benjapak Sanghuaiprai และ Wisakha Phoochinda. Development model of the elderly's health service system towards the excellence of tertiary hospitals attached to the Royal Thai Navy. ม.ป.ท.:National Institute of Development Administration, 2020. Print.