@misc{indiciae4465c012346e, title = {Effects of high-preference single-digit mathematics problem completion on multiple-digit mathematics problem performance.}, author = {P J Belfiore and D L Lee and A U Vargas and C H Skinner}, year = {1997}, doi = {10.1901/jaba.1997.30-327}, url = {https://pubmed.ncbi.nlm.nih.gov/9210310/}, note = {Source identifier: 9210310} }