Pungpond Rukumnuaykit. 2011. Mental health and happiness of the Thai people. Bangkok:School of Development Economics National Institute of Development Administration;
Pungpond Rukumnuaykit. (2011) Mental health and happiness of the Thai people (รายงานผลงานวิจัย). School of Development Economics National Institute of Development Administration:Bangkok.
Pungpond Rukumnuaykit. Mental health and happiness of the Thai people. Bangkok:School of Development Economics National Institute of Development Administration, 2011.
Pungpond Rukumnuaykit. (2011) Mental health and happiness of the Thai people (รายงานผลงานวิจัย). School of Development Economics National Institute of Development Administration:Bangkok.