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Lua i Stíl Chicago (17ú heag.)Commonwealth Conference on Non-formal Education for Development New Delhi, India, agus Paul Fordham. Participation, Learning, and Change: Commonwealth Approaches to Non-formal Education : An Edited Version of Papers. London: Commonwealth Secretariat, 1980.
Lua MLA (8ú heag.)Commonwealth Conference on Non-formal Education for Development New Delhi, India, agus Paul Fordham. Participation, Learning, and Change: Commonwealth Approaches to Non-formal Education : An Edited Version of Papers. Commonwealth Secretariat, 1980.