FRANK, T.; SCHARFF, L. L. Learning Contracts in Undergraduate Courses: Impacts on Student Behaviors and Academic Performance. Journal of the Scholarship of Teaching and Learning, [S. l.], v. 13, n. 4, p. 36–53, 2013. Disponível em: https://scholarworks.iu.edu/journals/index.php/josotl/article/view/3453. Acesso em: 30 may. 2023.