Bryant, M. (2003). Program Evaluation, Retrieved from: http://cehs.unl.edu/mbryant/973/models.html
Fenwick, T.& Parsons, J. (2009). The Art of Evaluation. A Resource for Educators and Trainers (2nd ed.) Toronto, Ca: Thompson Education Publishing, Inc.
Owen, J. (2007). Program Evaluation. Forms and Approaches. New York, NY: The Guilford Press.
Scriven, M. (2007). The logic of evaluation. In H.V. Hanson et, al. (Eds) Dissensus and the Search for Common Ground, CD-ROM (p. 1-16). Windsor, ON: OSSA
Younker, B. (2014). Selected Works of Brandon: Goal Free Evaluation. Retrieved from: http://works.bepress.com/brandon_youker/1/
Fenwick, T.& Parsons, J. (2009). The Art of Evaluation. A Resource for Educators and Trainers (2nd ed.) Toronto, Ca: Thompson Education Publishing, Inc.
Owen, J. (2007). Program Evaluation. Forms and Approaches. New York, NY: The Guilford Press.
Scriven, M. (2007). The logic of evaluation. In H.V. Hanson et, al. (Eds) Dissensus and the Search for Common Ground, CD-ROM (p. 1-16). Windsor, ON: OSSA
Younker, B. (2014). Selected Works of Brandon: Goal Free Evaluation. Retrieved from: http://works.bepress.com/brandon_youker/1/