(1959). Universal decimal classification: English edition of the classification décimale universelle of the Fédération internationale de documentation 69 : building materials, contruction, trades ([1st ed.].). British Standards Institution.
Chicago-Zitierstil (17. Ausg.)Universal Decimal Classification: English Edition of the Classification Décimale Universelle of the Fédération Internationale De Documentation 69 : Building Materials, Contruction, Trades. [1st ed.]. London: British Standards Institution, 1959.
MLA-Zitierstil (9. Ausg.)Universal Decimal Classification: English Edition of the Classification Décimale Universelle of the Fédération Internationale De Documentation 69 : Building Materials, Contruction, Trades. [1st ed.]. British Standards Institution, 1959.