Walter, Pierre G. 1990. A case study of adult literacy in the lives of low literate adults in Thailand. Madison:[s.n.];
Walter, Pierre G. (1990) A case study of adult literacy in the lives of low literate adults in Thailand (รายงานผลงานวิจัย). [s.n.]:Madison.
Walter, Pierre G. A case study of adult literacy in the lives of low literate adults in Thailand. Madison:[s.n.], 1990.
Walter, Pierre G. (1990) A case study of adult literacy in the lives of low literate adults in Thailand (รายงานผลงานวิจัย). [s.n.]:Madison.