Zolfaghari, Maryam, Austin, C. K., and Kosko, K. W. Exploring Teachers' Pedagogical Content Knowledge of Teaching Fractions. Retrieved from https://par.nsf.gov/biblio/10478088. Investigations in Mathematics Learning 13.3 Web. doi:10.1080/19477503.2021.1963145.

Zolfaghari, Maryam, Austin, C. K., & Kosko, K. W. Exploring Teachers' Pedagogical Content Knowledge of Teaching Fractions. Investigations in Mathematics Learning, 13 (3). Retrieved from https://par.nsf.gov/biblio/10478088. https://doi.org/10.1080/19477503.2021.1963145

Zolfaghari, Maryam, Austin, C. K., and Kosko, K. W. "Exploring Teachers' Pedagogical Content Knowledge of Teaching Fractions". Investigations in Mathematics Learning 13 (3). Country unknown/Code not available: Research Council on Mathematics Learning. https://doi.org/10.1080/19477503.2021.1963145. https://par.nsf.gov/biblio/10478088.

@article{osti_10478088,
place = {Country unknown/Code not available}, title = {Exploring Teachers' Pedagogical Content Knowledge of Teaching Fractions}, url = {https://par.nsf.gov/biblio/10478088}, DOI = {10.1080/19477503.2021.1963145}, abstractNote = {}, journal = {Investigations in Mathematics Learning}, volume = {13}, number = {3}, publisher = {Research Council on Mathematics Learning}, author = {Zolfaghari, Maryam and Austin, C. K. and Kosko, K. W.}, }