333551 Walton, J., & Carns, D. E. (1977). Cities in change: Studies on the urban condition. Boston : Allun & Bacon.
Cita Chicago (17th ed.)333551 Walton, John, i Donal E. Carns. Cities in Change: Studies on the Urban Condition. Boston : Allun & Bacon, 1977.
Cita MLA (9th ed.)333551 Walton, John, i Donal E. Carns. Cities in Change: Studies on the Urban Condition. Boston : Allun & Bacon, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.