Sirikanya Cha-umthong. (1976). A prosposed guidance program for Protestant Christian elementary schools in Thailand [microform]. Photoduplication Service. University of the Philippines Library.
Citazione stile Chigago Style (17a edizione)Sirikanya Cha-umthong. A Prosposed Guidance Program for Protestant Christian Elementary Schools in Thailand [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1976.
Citatione MLA (9a ed.)Sirikanya Cha-umthong. A Prosposed Guidance Program for Protestant Christian Elementary Schools in Thailand [microform]. Photoduplication Service. University of the Philippines Library, 1976.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.