Sassen, S. (2012). Cities in a world economy (4th ed.). SAGE/Pine Forge.
Lua i Stíl Chicago (17ú heag.)Sassen, Saskia. Cities in a World Economy. 4th ed. Thousand Oaks, Calif.: SAGE/Pine Forge, 2012.
Lua MLA (8ú heag.)Sassen, Saskia. Cities in a World Economy. 4th ed. SAGE/Pine Forge, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.