Verdugo, R. R., & Verdugo, R. R. (2018). American Education and the Demography of the US Student Population, 1880 - 2014 (1st ed. 2018.). Springer International Publishing : Imprint: Springer. https://doi.org/10.1007/978-3-319-89423-2
Παραπομπή σε μορφή Chicago (17η εκδ.)Verdugo, Richard R., και Richard R. Verdugo. American Education and the Demography of the US Student Population, 1880 - 2014. 1st ed. 2018. Cham: Springer International Publishing : Imprint: Springer, 2018. https://doi.org/10.1007/978-3-319-89423-2.
Παραπομπή σε μορφή MLA (8th εκδ.)Verdugo, Richard R., και Richard R. Verdugo. American Education and the Demography of the US Student Population, 1880 - 2014. 1st ed. 2018. Springer International Publishing : Imprint: Springer, 2018. https://doi.org/10.1007/978-3-319-89423-2.
