APA Edition Citation

(1961). Universal decimal classification abridged English edition (3rd. ed.). British Standards Instt..

Chicago Edition Citation

Universal Decimal Classification Abridged English Edition. 3rd. ed. London: British Standards Instt., 1961.

MLA Edition Citation

Universal Decimal Classification Abridged English Edition. 3rd. ed. British Standards Instt., 1961.

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