Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service), Duarte, D., & Silva Sampaio, J. (2018). Proportionality in Law: An Analytical Perspective (1st ed. 2018.). Springer International Publishing : Imprint: Springer. https://doi.org/10.1007/978-3-319-89647-2

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service), David Duarte, και Jorge Silva Sampaio. Proportionality in Law: An Analytical Perspective. 1st ed. 2018. Cham: Springer International Publishing : Imprint: Springer, 2018. https://doi.org/10.1007/978-3-319-89647-2.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service), et al. Proportionality in Law: An Analytical Perspective. 1st ed. 2018. Springer International Publishing : Imprint: Springer, 2018. https://doi.org/10.1007/978-3-319-89647-2.