Παραπομπή APA

Parrish, H. (1967). Pratt and Mackenzie's Law of highways - supplement (21st ed.). Butterworth.

Παραπομπή Chicago Style

Parrish, Harold. Pratt and Mackenzie's Law of Highways - Supplement. 21st ed. London: Butterworth, 1967.

Παραπομπή MLA

Parrish, Harold. Pratt and Mackenzie's Law of Highways - Supplement. 21st ed. Butterworth, 1967.