- Davis, LouisCritical Success Factors for the Use of ROI Methodology in the Meetings Industry. University of Guelph, master’s in business administration thesis. For a copy of the electronic version, send an e-mail to louisa@primestrategies.ca
- Phillips, J.J., Handbook of Training Evaluation and Measurement Methods. 3rd edition, 1997
- Phillips, Drew Stone, How To Measure Training Results. McGraw-Hill, 2002
