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MLA Citation
Apollo M Nkwake. Credibility, validity, and assumptions in program evaluation methodology. Cham : Springer, 2015. http://access.bl.uk/ark:/81055/vdc_100072052934.0x000001
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Apollo M Nkwake. Credibility, validity, and assumptions in program evaluation methodology. Cham : Springer, 2015. http://access.bl.uk/ark:/81055/vdc_100072052934.0x000001