Barker, T. C., & Savage, C. I. (1974). An economic history of transport in Britain (3rd ed., revised.). London: Hutchinson.
Παραπομπή Chicago StyleBarker, Theodore Cardwell, and C. I. Savage. An Economic History of Transport in Britain. 3rd ed., revised. London: Hutchinson, 1974.
Παραπομπή MLABarker, Theodore Cardwell, and C. I. Savage. An Economic History of Transport in Britain. 3rd ed., revised. London: Hutchinson, 1974.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.