APA Citation

(1961). Guide to the Universal Decimal Classification, UDC (3rd ed. rev.). London: British Standards Institution.

Chicago Style Citation

Guide to the Universal Decimal Classification, UDC. 3rd ed. rev. London: British Standards Institution, 1961.

MLA Citation

Guide to the Universal Decimal Classification, UDC. 3rd ed. rev. London: British Standards Institution, 1961.

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