Cita APA (7a ed.)

British Standards Institution. (1972). UNIVERSAL decimal classification. UDC 9. Geography. Biography. History (English full ed., 4th international ed.). British Standards Institution.

Cita Chicago Style (17a ed.)

British Standards Institution. UNIVERSAL Decimal Classification. UDC 9. Geography. Biography. History. English full ed., 4th international ed. London: British Standards Institution, 1972.

Cita MLA (8a ed.)

British Standards Institution. UNIVERSAL Decimal Classification. UDC 9. Geography. Biography. History. English full ed., 4th international ed. British Standards Institution, 1972.