Dyfyniad APA

Proceedings of the 1990 ACM conference on Computer-supported cooperative work. Association for Computing Machinery (ACM).

Dyfyniad Arddull Chicago

Proceedings of the 1990 ACM Conference on Computer-supported Cooperative Work. Association for Computing Machinery (ACM).

Dyfyniad MLA

Proceedings of the 1990 ACM Conference on Computer-supported Cooperative Work. Association for Computing Machinery (ACM).

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.