New York (City) Public Library. Research Libraries. (1968). Library catalogs: Their preservation and maintenance by photographic and automated techniques ; a study. by M. I. T. Press.
Cita Chicago (17th ed.)New York (City) Public Library. Research Libraries. Library Catalogs: Their Preservation and Maintenance by Photographic and Automated Techniques ; a Study. Astor, Lenox and Tilden Foundations: by M. I. T. Press, 1968.
Cita MLA (9th ed.)New York (City) Public Library. Research Libraries. Library Catalogs: Their Preservation and Maintenance by Photographic and Automated Techniques ; a Study. by M. I. T. Press, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.