Redaktionen, .-. (1887) “Arthur T. Hadley, Railroad Transportation, ist History and its Laws. New York and London, G. P. Putnams Sons. 1886. (269 S.)”, Nationaløkonomisk tidsskrift, 5. Available at: https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/65320 (Accessed: 6 November 2026).