APA
Yap C., Association for Computing Machinery, ACM Special Interest Group on Algorithms and Computation Theory & ACM Special Interest Group on Computer Graphics and Interactive Techniques. (1993). Proceedings of the ninth annual symposium on Computational geometry. New York, NY: ACM.
Chicago
Yap Chee, Association for Computing Machinery, ACM Special Interest Group on Algorithms and Computation Theory and ACM Special Interest Group on Computer Graphics and Interactive Techniques. 1993. Proceedings of the ninth annual symposium on Computational geometry. New York, NY: ACM.
Harvard
Yap C., Association for Computing Machinery, ACM Special Interest Group on Algorithms and Computation Theory and ACM Special Interest Group on Computer Graphics and Interactive Techniques. (1993). Proceedings of the ninth annual symposium on Computational geometry. New York, NY: ACM.
MLA
Yap Chee, Association for Computing Machinery, ACM Special Interest Group on Algorithms and Computation Theory and ACM Special Interest Group on Computer Graphics and Interactive Techniques. Proceedings of the ninth annual symposium on Computational geometry. New York, NY: ACM. 1993.