Webb, R. (1976). On the statistical mapping of urban poverty and employment. International Bank for Reconstruction and Development.
Lua i Stíl Chicago (17ú heag.)Webb, Richard. On the Statistical Mapping of Urban Poverty and Employment. Washington: International Bank for Reconstruction and Development, 1976.
Lua MLA (9ú heag.)Webb, Richard. On the Statistical Mapping of Urban Poverty and Employment. International Bank for Reconstruction and Development, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.