Hewagallage, Dona, Christman, Elaine, and Stewart, John. Examining the relation of high school preparation and college achievement to conceptual understanding. Retrieved from https://par.nsf.gov/biblio/10421471. Physical Review Physics Education Research 18.1 Web. doi:10.1103/PhysRevPhysEducRes.18.010149.

Hewagallage, Dona, Christman, Elaine, & Stewart, John. Examining the relation of high school preparation and college achievement to conceptual understanding. Physical Review Physics Education Research, 18 (1). Retrieved from https://par.nsf.gov/biblio/10421471. https://doi.org/10.1103/PhysRevPhysEducRes.18.010149

Hewagallage, Dona, Christman, Elaine, and Stewart, John. "Examining the relation of high school preparation and college achievement to conceptual understanding". Physical Review Physics Education Research 18 (1). Country unknown/Code not available. https://doi.org/10.1103/PhysRevPhysEducRes.18.010149. https://par.nsf.gov/biblio/10421471.

@article{osti_10421471,
place = {Country unknown/Code not available}, title = {Examining the relation of high school preparation and college achievement to conceptual understanding}, url = {https://par.nsf.gov/biblio/10421471}, DOI = {10.1103/PhysRevPhysEducRes.18.010149}, abstractNote = {}, journal = {Physical Review Physics Education Research}, volume = {18}, number = {1}, author = {Hewagallage, Dona and Christman, Elaine and Stewart, John}, }