J. D. Pitts, S. J. Poole, and M. M. Stephens, “Projecting a High-School Quarterback’s Performance at the Collegiate Level: A Comparison of the Rivals, 247 Sports, and ESPN Recruiting Ratings”, JAS, vol. 5, no. 2, pp. 57–79, Sep. 2019, doi: 10.17161/jas.v5i2.8190.