British Standards Institution. Universal Decimal Classification (2nd English full ed.). British Standards Institution.
Chicago-Zitierstil (17. Ausg.)British Standards Institution. Universal Decimal Classification. 2nd English full ed. London: British Standards Institution.
MLA-Zitierstil (8. Ausg.)British Standards Institution. Universal Decimal Classification. 2nd English full ed. British Standards Institution.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.