Upper D. The unsuccessful self-treatment of a case of “writer’s block”. J Appl
Behav Anal. 1974 Fall;7(3):497. PubMed PMID: 16795475; PubMed Central PMCID:
PMC1311997.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1311997/pdf/jaba00061-0143a.pdf
Upper D. The unsuccessful self-treatment of a case of “writer’s block”. J Appl
Behav Anal. 1974 Fall;7(3):497. PubMed PMID: 16795475; PubMed Central PMCID:
PMC1311997.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1311997/pdf/jaba00061-0143a.pdf