Warisa Matthaya. (2000) The effects of group process activities on the reduction of loneliness in the elderly of Khaoborkaew home for the aged, Nakhonsawan province. Mahidol University,:ม.ป.ท.Warisa Matthaya. 2000. The effects of group process activities on the reduction of loneliness in the elderly of Khaoborkaew home for the aged, Nakhonsawan province. ม.ป.ท.:Mahidol University,;Warisa Matthaya. The effects of group process activities on the reduction of loneliness in the elderly of Khaoborkaew home for the aged, Nakhonsawan province. ม.ป.ท.:Mahidol University, 2000. Print.