APA
International Federation For Documentation, International Federation For Documentation, . (1958). Universal Decimal Classification. London: British Standards Institution.
Chicago
International Federation For Documentation, International Federation For Documentation, . 1958. Universal Decimal Classification. London: British Standards Institution.
Harvard
International Federation For Documentation, International Federation For Documentation, . (1958). Universal Decimal Classification. London: British Standards Institution.
MLA
International Federation For Documentation, International Federation For Documentation, . Universal Decimal Classification. London: British Standards Institution. 1958.
