Cummings, W. K. (1986). Low-cost primary education: Implementing an innovation in six nations. International Development Research Centre.
Chicago-viite (17. p.)Cummings, William K. Low-cost Primary Education: Implementing an Innovation in Six Nations. Ottawa, Ont., Canada: International Development Research Centre, 1986.
MLA-viite (8. p.)Cummings, William K. Low-cost Primary Education: Implementing an Innovation in Six Nations. International Development Research Centre, 1986.
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