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.