Ratchaphon Amsuk และ Tippawan Lorsuwannarat. (2023) The management development of the elderly quality of life development and career promotion centers. National Institute of Development Administration:ม.ป.ท.Ratchaphon Amsuk และ Tippawan Lorsuwannarat. 2023. The management development of the elderly quality of life development and career promotion centers. ม.ป.ท.:National Institute of Development Administration;Ratchaphon Amsuk และ Tippawan Lorsuwannarat. The management development of the elderly quality of life development and career promotion centers. ม.ป.ท.:National Institute of Development Administration, 2023. Print.