Vilay Phouthalath. (1999) Leadership style and work development value of provincial health administrators in Lao People's Democratic Republic. Mahidol University,:ม.ป.ท.Vilay Phouthalath. 1999. Leadership style and work development value of provincial health administrators in Lao People's Democratic Republic. ม.ป.ท.:Mahidol University,;Vilay Phouthalath. Leadership style and work development value of provincial health administrators in Lao People's Democratic Republic. ม.ป.ท.:Mahidol University, 1999. Print.