APA

Schmidt K., Association for Computing Machinery & ACM Special Interest Group on Supporting Group Work. (2003). Proceedings of the 2003 international ACM SIGGROUP conference on Supporting group work. New York, NY: ACM.

Chicago

Schmidt Kjeld, Association for Computing Machinery and ACM Special Interest Group on Supporting Group Work. 2003. Proceedings of the 2003 international ACM SIGGROUP conference on Supporting group work. New York, NY: ACM.

Harvard

Schmidt K., Association for Computing Machinery and ACM Special Interest Group on Supporting Group Work. (2003). Proceedings of the 2003 international ACM SIGGROUP conference on Supporting group work. New York, NY: ACM.

MLA

Schmidt Kjeld, Association for Computing Machinery and ACM Special Interest Group on Supporting Group Work. Proceedings of the 2003 international ACM SIGGROUP conference on Supporting group work. New York, NY: ACM. 2003.