Martin, Fred, Lee, Irene, Lytle, Nicholas, Sentance, Sue, and Lao, Natalie. Extending and Evaluating the Use-Modify-Create Progression for Engaging Youth in Computational Thinking. Retrieved from https://par.nsf.gov/biblio/10200190. 51st ACM Technical Symposium on Computer Science Education . Web. doi:10.1145/3328778.3366971.

Martin, Fred, Lee, Irene, Lytle, Nicholas, Sentance, Sue, & Lao, Natalie. Extending and Evaluating the Use-Modify-Create Progression for Engaging Youth in Computational Thinking. 51st ACM Technical Symposium on Computer Science Education, (). Retrieved from https://par.nsf.gov/biblio/10200190. https://doi.org/10.1145/3328778.3366971

Martin, Fred, Lee, Irene, Lytle, Nicholas, Sentance, Sue, and Lao, Natalie. "Extending and Evaluating the Use-Modify-Create Progression for Engaging Youth in Computational Thinking". 51st ACM Technical Symposium on Computer Science Education (). Country unknown/Code not available. https://doi.org/10.1145/3328778.3366971. https://par.nsf.gov/biblio/10200190.

@article{osti_10200190,
place = {Country unknown/Code not available}, title = {Extending and Evaluating the Use-Modify-Create Progression for Engaging Youth in Computational Thinking}, url = {https://par.nsf.gov/biblio/10200190}, DOI = {10.1145/3328778.3366971}, abstractNote = {}, journal = {51st ACM Technical Symposium on Computer Science Education}, author = {Martin, Fred and Lee, Irene and Lytle, Nicholas and Sentance, Sue and Lao, Natalie}, editor = {null} }