Osaka : Graduate School of Human Sciences Osaka University
Majalah, Jurnal, Buletin
Bangkok Secretariat Association of Southeast Asian Institutions Chulalongkorn University 1957
Buku Teks
The School of Oriental and African Studies : University of London
Majalah, Jurnal, Buletin
Univ. of Tennessee
The health and safety dept., 1973
Buku Teks
edited by Catherine Murphy
Libraries Unlimited , 1992
Buku Teks