Oraphan Ritman. 2016. Needs analysis of english language skills for professional nurse: the context of asean economic community. , Mahidol University;
Oraphan Ritman. (2016) Needs analysis of english language skills for professional nurse: the context of asean economic community . Mahidol University/Nakhon Pathom.
Oraphan Ritman. Needs analysis of english language skills for professional nurse: the context of asean economic community. . Nakhon Pathom:Mahidol University, 2016.
Oraphan Ritman. (2016) Needs analysis of english language skills for professional nurse: the context of asean economic community . Mahidol University/Nakhon Pathom.