APA

Hypertext'91, Association for Computing Machinery, ACM Special Interest Group on Computer-Human Interaction, ACM Special Interest Group on Information Retrieval, Hypertext H. a. W., ACM Special Interest Group on Hypertext H. a. W. & ACM Special Interest Group on Supporting Group Work. (1991). Proceedings of the third annual ACM conference on Hypertext. New York, NY: ACM.

Chicago

Hypertext'91, Association for Computing Machinery, ACM Special Interest Group on Computer-Human Interaction, ACM Special Interest Group on Information Retrieval, Hypertext Hypermedia and Web, ACM Special Interest Group on Hypertext Hypermedia and Web and ACM Special Interest Group on Supporting Group Work. 1991. Proceedings of the third annual ACM conference on Hypertext. New York, NY: ACM.

Harvard

Hypertext'91, Association for Computing Machinery, ACM Special Interest Group on Computer-Human Interaction, ACM Special Interest Group on Information Retrieval, Hypertext H. a. W., ACM Special Interest Group on Hypertext H. a. W. and ACM Special Interest Group on Supporting Group Work. (1991). Proceedings of the third annual ACM conference on Hypertext. New York, NY: ACM.

MLA

Hypertext'91, Association for Computing Machinery, ACM Special Interest Group on Computer-Human Interaction, ACM Special Interest Group on Information Retrieval, Hypertext Hypermedia and Web, ACM Special Interest Group on Hypertext Hypermedia and Web and ACM Special Interest Group on Supporting Group Work. Proceedings of the third annual ACM conference on Hypertext. New York, NY: ACM. 1991.