Elsdon, K. T. (2003). Crisis of opportunity: Perspectives on adult education and humanism. NIACE.
Chicago-referens (17:e uppl.)Elsdon, Konrad Theodore. Crisis of Opportunity: Perspectives on Adult Education and Humanism. Leicester: NIACE, 2003.
MLA-referens (9:e uppl.)Elsdon, Konrad Theodore. Crisis of Opportunity: Perspectives on Adult Education and Humanism. NIACE, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.