SpringerLink (Online service), Al-Ekabi, C., & Ferretti, S. (2018). Yearbook on Space Policy 2016: Space for Sustainable Development (1st ed. 2018.). Springer International Publishing : Imprint: Springer. https://doi.org/10.1007/978-3-319-72465-2
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Cenan Al-Ekabi, και Stefano Ferretti. Yearbook on Space Policy 2016: Space for Sustainable Development. 1st ed. 2018. Cham: Springer International Publishing : Imprint: Springer, 2018. https://doi.org/10.1007/978-3-319-72465-2.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Yearbook on Space Policy 2016: Space for Sustainable Development. 1st ed. 2018. Springer International Publishing : Imprint: Springer, 2018. https://doi.org/10.1007/978-3-319-72465-2.
