European Strategic Programme of Research and Development in Information Technology & Commission of the European Communities. Directorate-General for Telecommunications, Information Industries, and Innovation. (1990). Synopses of information processing systems. Commission of the European Communities.
Παραπομπή σε μορφή Chicago (17η εκδ.)European Strategic Programme of Research and Development in Information Technology και Information Industries Commission of the European Communities. Directorate-General for Telecommunications. Synopses of Information Processing Systems. Brussels: Commission of the European Communities, 1990.
Παραπομπή σε μορφή MLA (9th εκδ.)European Strategic Programme of Research and Development in Information Technology και Information Industries Commission of the European Communities. Directorate-General for Telecommunications. Synopses of Information Processing Systems. Commission of the European Communities, 1990.