Redaktionen, -. “The Quarterly Journal of Economics. Published for Harward University. Boston, Geo. H. Ellis. No.S 1 &2. Oct. 1886. Jan. 1887”. Nationaløkonomisk tidsskrift 5 (January 1, 1887). Accessed December 5, 2025. https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/65282.