Koed, H. (1929) “EDWIN R. A. Seligman: The Economics of Instalment Selling. A study in Consumers Credit with special reference to the automobile. I—II. 357 + 623 Sider. Harper & Brothers. New York 1927. Pris 8 $”., Nationaløkonomisk Tidsskrift, 37. Tilgængelig hos: https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/57267 (Set: 5 december 2025).