APA

de Graça Pimentel M., Association for Computing Machinery & ACM Special Interest Group on Hypertext H. a. W. (2008). Proceedings of the eighth ACM symposium on Document engineering. New York, NY: ACM.

Chicago

de Graça Pimentel Maria, Association for Computing Machinery and ACM Special Interest Group on Hypertext Hypermedia and Web. 2008. Proceedings of the eighth ACM symposium on Document engineering. New York, NY: ACM.

Harvard

de Graça Pimentel M., Association for Computing Machinery and ACM Special Interest Group on Hypertext H. a. W. (2008). Proceedings of the eighth ACM symposium on Document engineering. New York, NY: ACM.

MLA

de Graça Pimentel Maria, Association for Computing Machinery and ACM Special Interest Group on Hypertext Hypermedia and Web. Proceedings of the eighth ACM symposium on Document engineering. New York, NY: ACM. 2008.