SpringerLink (Online service) & Gellersen, H. (1999). Handheld and Ubiquitous Computing: First International Symposium, HUC'99, Karlsruhe, Germany, September 27-29, 1999, Proceedings (1st ed. 1999.). Springer Berlin Heidelberg : Imprint: Springer. https://doi.org/10.1007/3-540-48157-5
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service) και Hans-W Gellersen. Handheld and Ubiquitous Computing: First International Symposium, HUC'99, Karlsruhe, Germany, September 27-29, 1999, Proceedings. 1st ed. 1999. Berlin, Heidelberg: Springer Berlin Heidelberg : Imprint: Springer, 1999. https://doi.org/10.1007/3-540-48157-5.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service) και Hans-W Gellersen. Handheld and Ubiquitous Computing: First International Symposium, HUC'99, Karlsruhe, Germany, September 27-29, 1999, Proceedings. 1st ed. 1999. Springer Berlin Heidelberg : Imprint: Springer, 1999. https://doi.org/10.1007/3-540-48157-5.
