APA (7th ed.) Citation
(1949). Universal decimal classification: 669 Metallurgy. British Standarts Institution.
Chicago Style (17th ed.) Citation
Universal Decimal Classification: 669 Metallurgy. London: British Standarts Institution, 1949.
MLA (9th ed.) Citation
Universal Decimal Classification: 669 Metallurgy. British Standarts Institution, 1949.
Warning: These citations may not always be 100% accurate.