Clements, Douglas H., Sarama, Julie, Van Dine, Douglas W., Barrett, Jeffrey E., Cullen, Craig J., Hudyma, Aaron, Dolgin, Ron, Cullen, Amanda L., and Eames, Cheryl L. Evaluation of three interventions teaching area measurement as spatial structuring to young children. Retrieved from https://par.nsf.gov/biblio/10134270. The Journal of Mathematical Behavior 50.C Web. doi:10.1016/j.jmathb.2017.12.004.

Clements, Douglas H., Sarama, Julie, Van Dine, Douglas W., Barrett, Jeffrey E., Cullen, Craig J., Hudyma, Aaron, Dolgin, Ron, Cullen, Amanda L., & Eames, Cheryl L. Evaluation of three interventions teaching area measurement as spatial structuring to young children. The Journal of Mathematical Behavior, 50 (C). Retrieved from https://par.nsf.gov/biblio/10134270. https://doi.org/10.1016/j.jmathb.2017.12.004

Clements, Douglas H., Sarama, Julie, Van Dine, Douglas W., Barrett, Jeffrey E., Cullen, Craig J., Hudyma, Aaron, Dolgin, Ron, Cullen, Amanda L., and Eames, Cheryl L. "Evaluation of three interventions teaching area measurement as spatial structuring to young children". The Journal of Mathematical Behavior 50 (C). Country unknown/Code not available. https://doi.org/10.1016/j.jmathb.2017.12.004. https://par.nsf.gov/biblio/10134270.

@article{osti_10134270,
place = {Country unknown/Code not available}, title = {Evaluation of three interventions teaching area measurement as spatial structuring to young children}, url = {https://par.nsf.gov/biblio/10134270}, DOI = {10.1016/j.jmathb.2017.12.004}, abstractNote = {}, journal = {The Journal of Mathematical Behavior}, volume = {50}, number = {C}, author = {Clements, Douglas H. and Sarama, Julie and Van Dine, Douglas W. and Barrett, Jeffrey E. and Cullen, Craig J. and Hudyma, Aaron and Dolgin, Ron and Cullen, Amanda L. and Eames, Cheryl L.}, }