APA

Whitton M. C., Association for Computing Machinery & ACM Special Interest Group on Computer Graphics and Interactive Techniques. (1993). Proceedings of the 20th annual conference on Computer graphics and interactive techniques. New York, NY: ACM.

Chicago

Whitton Mary C, Association for Computing Machinery and ACM Special Interest Group on Computer Graphics and Interactive Techniques. 1993. Proceedings of the 20th annual conference on Computer graphics and interactive techniques. New York, NY: ACM.

Harvard

Whitton M. C., Association for Computing Machinery and ACM Special Interest Group on Computer Graphics and Interactive Techniques. (1993). Proceedings of the 20th annual conference on Computer graphics and interactive techniques. New York, NY: ACM.

MLA

Whitton Mary C, Association for Computing Machinery and ACM Special Interest Group on Computer Graphics and Interactive Techniques. Proceedings of the 20th annual conference on Computer graphics and interactive techniques. New York, NY: ACM. 1993.