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Influence of pre and post testing on return on investment calculations in training and development.
Hiraoka, Calvin H., (2008)
ROI on a shoe‐string: strategies for resource‐constrained environments : Measuring more with less (part I)
Burkett, Holly, (2005)
ROI on a shoestring: evaluation strategies for resource‐constrained environments or ROI on a shoestring : Measuring more with less (part II)