APA

Zanden B. V., Association for Computing Machinery, ACM Special Interest Group on Computer-Human Interaction & ACM Special Interest Group on Computer Graphics and Interactive Techniques. (1999). Proceedings of the 12th annual ACM symposium on User interface software and technology. New York, NY: ACM.

Chicago

Zanden Brad Vander, Association for Computing Machinery, ACM Special Interest Group on Computer-Human Interaction and ACM Special Interest Group on Computer Graphics and Interactive Techniques. 1999. Proceedings of the 12th annual ACM symposium on User interface software and technology. New York, NY: ACM.

Harvard

Zanden B. V., Association for Computing Machinery, ACM Special Interest Group on Computer-Human Interaction and ACM Special Interest Group on Computer Graphics and Interactive Techniques. (1999). Proceedings of the 12th annual ACM symposium on User interface software and technology. New York, NY: ACM.

MLA

Zanden Brad Vander, Association for Computing Machinery, ACM Special Interest Group on Computer-Human Interaction and ACM Special Interest Group on Computer Graphics and Interactive Techniques. Proceedings of the 12th annual ACM symposium on User interface software and technology. New York, NY: ACM. 1999.