Cite
APA Citation
Unknown (1999). Evaluation research : an introduction to principles, methods, and practice. London Thousand Oaks, Calif : SAGE. http://access.bl.uk/ark:/81055/vdc_100025505735.0x000001
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Unknown (1999). Evaluation research : an introduction to principles, methods, and practice. London Thousand Oaks, Calif : SAGE. http://access.bl.uk/ark:/81055/vdc_100025505735.0x000001