Cita APA

British Standards Institution. (1977). Universal decimal classification (2nd English full ed.). British Standard Institution.

Citación estilo Chicago

British Standards Institution. Universal Decimal Classification. 2nd English full ed. London: British Standard Institution, 1977.

Cita MLA

British Standards Institution. Universal Decimal Classification. 2nd English full ed. British Standard Institution, 1977.

Warning: These citations may not always be 100% accurate.