APA-referens (7:e uppl.)

British Standards Institution. Universal Decimal Classification (English full ed. (4th international ed.).). British Standards Institution.

Chicago-referens (17:e uppl.)

British Standards Institution. Universal Decimal Classification. English full ed. (4th international ed.). London: British Standards Institution.

MLA-referens (8:e uppl.)

British Standards Institution. Universal Decimal Classification. English full ed. (4th international ed.). British Standards Institution.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.