Huang, H., Purves, R., Antoniou, V., Capineri, C., Kettunen, J., Ostermann, F., & Haklay, M. (2016). European Handbook of Crowdsourced Geographic Information. Ubiquity Press.
Lua i Stíl Chicago (17ú heag.)Huang, Haosheng, Ross Purves, Vyron Antoniou, Cristina Capineri, Juhani Kettunen, Frank Ostermann, agus Muki Haklay. European Handbook of Crowdsourced Geographic Information. Ubiquity Press, 2016.
Lua MLA (9ú heag.)Huang, Haosheng, et al. European Handbook of Crowdsourced Geographic Information. Ubiquity Press, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.