Porntip Coowanitwong. 1992. Burnout among professional nurses in Chulalongkorn hospital. Graduate School, Chulalongkorn University;
Porntip Coowanitwong. (1992) Burnout among professional nurses in Chulalongkorn hospital . Chulalongkorn University/Bangkok.
Porntip Coowanitwong. Burnout among professional nurses in Chulalongkorn hospital. . Bangkok:Chulalongkorn University, 1992.
Porntip Coowanitwong. (1992) Burnout among professional nurses in Chulalongkorn hospital . Chulalongkorn University/Bangkok.