Hopkinson, A. (1984). Common communication format: An implementation manual for cataloguers. s.n.].
Cita Chicago (17th ed.)Hopkinson, Alan. Common Communication Format: An Implementation Manual for Cataloguers. [s.l: s.n.], 1984.
Cita MLA (9th ed.)Hopkinson, Alan. Common Communication Format: An Implementation Manual for Cataloguers. s.n.], 1984.
Atenció: Aquestes cites poden no estar 100% correctes.