APA

Gellersen H., ACM Special Interest Group on Mobility of Systems U. D. &. C., ACM Special Interest Group on Applied Computing & ACM Special Interest Group on Computer-Human Interaction. (1999). Proceedings of the 1st international symposium on Handheld and Ubiquitous Computing. Berlin, Heidelberg: Springer-Verlag.

Chicago

Gellersen Hans-Werner, ACM Special Interest Group on Mobility of Systems Users Data & Comp, ACM Special Interest Group on Applied Computing and ACM Special Interest Group on Computer-Human Interaction. 1999. Proceedings of the 1st international symposium on Handheld and Ubiquitous Computing. Berlin, Heidelberg: Springer-Verlag.

Harvard

Gellersen H., ACM Special Interest Group on Mobility of Systems U. D. &. C., ACM Special Interest Group on Applied Computing and ACM Special Interest Group on Computer-Human Interaction. (1999). Proceedings of the 1st international symposium on Handheld and Ubiquitous Computing. Berlin, Heidelberg: Springer-Verlag.

MLA

Gellersen Hans-Werner, ACM Special Interest Group on Mobility of Systems Users Data & Comp, ACM Special Interest Group on Applied Computing and ACM Special Interest Group on Computer-Human Interaction. Proceedings of the 1st international symposium on Handheld and Ubiquitous Computing. Berlin, Heidelberg: Springer-Verlag. 1999.