SpringerLink (Online service), Ahlqvist, O., & Schlieder, C. (2018). Geogames and Geoplay: Game-based Approaches to the Analysis of Geo-Information (1st ed. 2018.). Springer International Publishing : Imprint: Springer. https://doi.org/10.1007/978-3-319-22774-0
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Ola Ahlqvist, και Christoph Schlieder. Geogames and Geoplay: Game-based Approaches to the Analysis of Geo-Information. 1st ed. 2018. Cham: Springer International Publishing : Imprint: Springer, 2018. https://doi.org/10.1007/978-3-319-22774-0.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Geogames and Geoplay: Game-based Approaches to the Analysis of Geo-Information. 1st ed. 2018. Springer International Publishing : Imprint: Springer, 2018. https://doi.org/10.1007/978-3-319-22774-0.
