Keegan, D. (2000). Distance training: Taking stock at a time of change. Routledge.
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Chicago-čujuhus (17. p.)
Keegan, Desmond. Distance Training: Taking Stock at a Time of Change. London: Routledge, 2000.
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MLA-čujuhus (9. p.)
Keegan, Desmond. Distance Training: Taking Stock at a Time of Change. Routledge, 2000.
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