APA aipamena

Sassen, S. (2012). Cities in a world economy (4th ed.). SAGE/Pine Forge.

Chicago Style aipamena

Sassen, Saskia. Cities in a World Economy. 4th ed. Thousand Oaks, Calif.: SAGE/Pine Forge, 2012.

MLA aipamena

Sassen, Saskia. Cities in a World Economy. 4th ed. SAGE/Pine Forge, 2012.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.