APA   Click to copy
Wiese, E. S., & Koedinger, K. R. (2014). How useful are fraction bars for understanding fraction equivalence and addition? A difficulty factors assessment with 5th, 6th, and 7th graders. In Presented at the Spring 2014 meeting of the Society for Research on Educational Effectiveness (SREE).

Chicago/Turabian   Click to copy
Wiese, Eliane Stampfer, and Kenneth R. Koedinger. “How Useful Are Fraction Bars for Understanding Fraction Equivalence and Addition? A Difficulty Factors Assessment with 5th, 6th, and 7th Graders.” In Presented at the Spring 2014 Meeting of the Society for Research on Educational Effectiveness (SREE), 2014.

MLA   Click to copy
Wiese, Eliane Stampfer, and Kenneth R. Koedinger. “How Useful Are Fraction Bars for Understanding Fraction Equivalence and Addition? A Difficulty Factors Assessment with 5th, 6th, and 7th Graders.” Presented at the Spring 2014 Meeting of the Society for Research on Educational Effectiveness (SREE), 2014.

@inproceedings{wiese2014a,
  title = {How useful are fraction bars for understanding fraction equivalence and addition? A difficulty factors assessment with 5th, 6th, and 7th graders},
  year = {2014},
  author = {Wiese, Eliane Stampfer and Koedinger, Kenneth R.},
  booktitle = {Presented at the Spring 2014 meeting of the Society for Research on Educational Effectiveness (SREE)}
}