@article{hoffman_huff_patterson_nietfeld_2009, title={Elementary teachers' use and perception of rewards in the classroom}, volume={25}, DOI={10.1016/j.tate.2008.12.004}, number={6}, journal={Teaching and Teacher Education}, author={Hoffman, K. F. and Huff, J. D. and Patterson, A. S. and Nietfeld, J. L.}, year={2009}, pages={843–849} }