Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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

Precaución: Estas citas no son 100% exactas.