(1985). Information systems: Theoretical and formal aspects : proceedings of the IFIP WG 8.1 Working Conference on Theoretical and Formal Aspects of Information Systems, Sitges, Barcelona, Spain, 16-18 April 1985 / edited by A. Sernadas, J. Bubenko, Jr., and A. Olivé.
Chicago-viite (17. p.)Information Systems: Theoretical and Formal Aspects : Proceedings of the IFIP WG 8.1 Working Conference on Theoretical and Formal Aspects of Information Systems, Sitges, Barcelona, Spain, 16-18 April 1985 / Edited by A. Sernadas, J. Bubenko, Jr., and A. Olivé. 1985.
MLA-viite (9. p.)Information Systems: Theoretical and Formal Aspects : Proceedings of the IFIP WG 8.1 Working Conference on Theoretical and Formal Aspects of Information Systems, Sitges, Barcelona, Spain, 16-18 April 1985 / Edited by A. Sernadas, J. Bubenko, Jr., and A. Olivé. 1985.