1. Albertson, L., & Billingsley, F. (1998). Improving children’s story writing: A direct instruction approach. Journal of Precision Teaching and Celeration, 15(2), 13–27.
2. Albrecht, P. (1981). Using precision teaching techniques to encourage creative writing. Journal of Precision Teaching, 2(1), 18–21.
3. Anderson, C. M., Hawkins, R. P., Freeman, K. A., & Scotti, J. R. (2000). Private events: Do they belong in a science of human behavior? The Behavior Analyst, 23, 1–10.
4. Bartels, C. S., & Calkin, A. B. (1980). Teaching emotionally disturbed students to count feelings. Topeka, KS: Topeka Public Schools. (ERIC Document Reproduction Service No. ED 187 060)
5. Calkin, A. B. (1979). Measuring and comparing perceived facts, fun, and freedom. Dissertation Abstracts International, 41 (01), 34A. (UMI No. AAT80-14398)