Williams, W. C. Approach to a city: William Carlos Williams. The city.(1979).
Cita Chicago Style (17a ed.)Williams, William Carlos. "Approach to a City: William Carlos Williams." The City.(1979) .
Cita MLA (8a ed.)Williams, William Carlos. "Approach to a City: William Carlos Williams." The City.(1979), .
Precaución: Estas citas no son 100% exactas.