Crawford, A., Carney, M., Champion, J., and Schmidt, M. The role of a boundary object in a study of middle grades mathematics instruction. Retrieved from https://par.nsf.gov/biblio/10426235. Proceedings of the forty-fourth annual meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education .

Crawford, A., Carney, M., Champion, J., & Schmidt, M. The role of a boundary object in a study of middle grades mathematics instruction. Proceedings of the forty-fourth annual meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education, (). Retrieved from https://par.nsf.gov/biblio/10426235.

Crawford, A., Carney, M., Champion, J., and Schmidt, M. "The role of a boundary object in a study of middle grades mathematics instruction". Proceedings of the forty-fourth annual meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education (). Country unknown/Code not available. https://par.nsf.gov/biblio/10426235.

@article{osti_10426235,
place = {Country unknown/Code not available}, title = {The role of a boundary object in a study of middle grades mathematics instruction}, url = {https://par.nsf.gov/biblio/10426235}, abstractNote = {}, journal = {Proceedings of the forty-fourth annual meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education}, author = {Crawford, A. and Carney, M. and Champion, J. and Schmidt, M.}, editor = {Lischka, A. E. and Dyer, E. B. and Jones, R. S. and Lovett, J. and Strayer, J and Drown, S.} }