Parrish, H. (1967). Pratt and Mackenzie's Law of highways - supplement (21st ed.). Butterworth.
Citación estilo ChicagoParrish, Harold. Pratt and Mackenzie's Law of Highways - Supplement. 21st ed. London: Butterworth, 1967.
Cita MLAParrish, Harold. Pratt and Mackenzie's Law of Highways - Supplement. 21st ed. Butterworth, 1967.
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