Book Review: Grace,A. P.,Rocco,T. S.,and Associates. (2009). Challenging the Professionalization of Adult Education: John Ohliger and Contradictions in Modern Practice. San Francisco,CA: Jossey-Bass

Kett, J.F. ( 1994). The pursuit of knowledge under difficulty: From self-improvement to adult education in America, 1750-1990. Stanford, CA : Stanford University Press.