Cita APA (7a ed.)
Buchanan, C., & Crowther, G. Traffic in Towns. Penguin.
Cita estilo Chicago (17a ed.)
Buchanan, Colin, y Geoffrey Crowther. Traffic in Towns. Londres, Inglaterra: Penguin.
Cita MLA (9a ed.)
Buchanan, Colin, y Geoffrey Crowther. Traffic in Towns. Penguin.
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