APA

Computer Supported Cooperative Work 90, Association for Computing Machinery, ACM Special Interest Group on Computer-Human Interaction & ACM Special Interest Group on Supporting Group Work. (1990). Proceedings of the 1990 ACM conference on Computer-supported cooperative work. New York, NY: ACM.

Chicago

Computer Supported Cooperative Work 90, Association for Computing Machinery, ACM Special Interest Group on Computer-Human Interaction and ACM Special Interest Group on Supporting Group Work. 1990. Proceedings of the 1990 ACM conference on Computer-supported cooperative work. New York, NY: ACM.

Harvard

Computer Supported Cooperative Work 90, Association for Computing Machinery, ACM Special Interest Group on Computer-Human Interaction and ACM Special Interest Group on Supporting Group Work. (1990). Proceedings of the 1990 ACM conference on Computer-supported cooperative work. New York, NY: ACM.

MLA

Computer Supported Cooperative Work 90, Association for Computing Machinery, ACM Special Interest Group on Computer-Human Interaction and ACM Special Interest Group on Supporting Group Work. Proceedings of the 1990 ACM conference on Computer-supported cooperative work. New York, NY: ACM. 1990.