Cita APA

Zerkoczy P. (1961). Universal Decimal Classification English Abridged edition 1961 (Photocopy) (3.). British standards Institution.

Citación estilo Chicago

Zerkoczy P. Universal Decimal Classification English Abridged Edition 1961 (Photocopy). 3. London: British standards Institution, 1961.

Cita MLA

Zerkoczy P. Universal Decimal Classification English Abridged Edition 1961 (Photocopy). 3. British standards Institution, 1961.