1. Barlow, D. H., Nock, M. K., & Hersen, M. (2009). Single case experimental designs: Strategies for studying behavior change (3rd ed.). New York, NY: Pearson.
2. Calkin, A. B. (2002). Estimated number of standard celeration charts as of 2000. Journal of Precision Teaching & Celeration, 18, 33–34.
3. Calkin, A. B. (2005). Precision teaching: The standard celeration chart. The Behavior Analyst Today, 6(4), 207–215. https://doi.org/10.1037/h0100073.
4. Cihon, T. M. (2007). A review of training intraverbal repertoires: Can precision teaching help? The Analysis of Verbal Behavior, 23(1), 123–133. https://doi.org/10.1007/BF03393052.
5. Clark, J. O. E. (2004). The essential dictionary of science. New York: Barnes & Noble.