Stevenson, G. T. (1969). A Proposed Plan for Reference Services for San Diego and Imperial Counties.
Cita Chicago Style (17a ed.)Stevenson, Grace Thomas. A Proposed Plan for Reference Services for San Diego and Imperial Counties. 1969.
Cita MLA (9a ed.)Stevenson, Grace Thomas. A Proposed Plan for Reference Services for San Diego and Imperial Counties. 1969.
Precaución: Estas citas no son 100% exactas.