APA (7th ed.) Citation

PorterSmith, M. (1976). The National Union Catalog Pre-1956 Imprints: A Progress Report.

Chicago Style (17th ed.) Citation

PorterSmith, Margaret. The National Union Catalog Pre-1956 Imprints: A Progress Report. 1976.

MLA (9th ed.) Citation

PorterSmith, Margaret. The National Union Catalog Pre-1956 Imprints: A Progress Report. 1976.

Warning: These citations may not always be 100% accurate.