Cita APA (7a ed.)

Hall, P., & Pfeiffer, U. (2000). Urban future 21: A global agenda for twenty-first century cities. Federal Ministry of Transport, Building and Housing, E&FN Spon.

Cita Chicago Style (17a ed.)

Hall, Peter, y Ulrich Pfeiffer. Urban Future 21: A Global Agenda for Twenty-first Century Cities. London: Federal Ministry of Transport, Building and Housing, E&FN Spon, 2000.

Cita MLA (9a ed.)

Hall, Peter, y Ulrich Pfeiffer. Urban Future 21: A Global Agenda for Twenty-first Century Cities. Federal Ministry of Transport, Building and Housing, E&FN Spon, 2000.