Wade, C. H., S. K. Cimbricz, G. Sonnert, M. Gruver, and P. M. Sadler. “The Secondary-Tertiary Transition in Mathematics: What High School Teachers Do to Prepare Students for Future Success in College-Level Calculus”. Journal of Mathematics Education at Teachers College, vol. 9, no. 2, Dec. 2018, doi:10.7916/jmetc.v9i2.583.