21. An Overview on Hmong Refugees. (Unpublished) Author(s): Vang, T.F. Format: Manuscript Publisher: 1982.
22. Notions sur la langue Hmong. (Unpublished) Author(s): Yang, D. Format: Manuscript Publisher: 1981.
23. The Hmong Culture and Educational Background. (unpublished) Author(s): Yang, Toua Format: Manuscript Publisher: 1980.