Espinoza González, J., Lupiáñez Gómez, J. L., & Segovia Alex, I. (2017). The posing of arithmetic problems by mathematically talented students. Universidad de Almería.
Chicago-viite (17. p.)Espinoza González, Johan, José Luis Lupiáñez Gómez, ja Isidoro Segovia Alex. The Posing of Arithmetic Problems by Mathematically Talented Students. Universidad de Almería, 2017.
MLA-viite (8. p.)Espinoza González, Johan, et al. The Posing of Arithmetic Problems by Mathematically Talented Students. Universidad de Almería, 2017.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.