APA (7th ed.) Citation

British Standards Institution. (1979). Universal Decimal Classification = Classification Décimale Universelle = Dezimalklasifikation. UDC58 = CDU58 = DK58. Botany = Botanique = Botanik (2nd English full ed.). British Standards Institution.

Chicago Style (17th ed.) Citation

British Standards Institution. Universal Decimal Classification = Classification Décimale Universelle = Dezimalklasifikation. UDC58 = CDU58 = DK58. Botany = Botanique = Botanik. 2nd English full ed. London: British Standards Institution, 1979.

MLA (8th ed.) Citation

British Standards Institution. Universal Decimal Classification = Classification Décimale Universelle = Dezimalklasifikation. UDC58 = CDU58 = DK58. Botany = Botanique = Botanik. 2nd English full ed. British Standards Institution, 1979.