v. Bülow, F. (1928) “ENGBERG, RUSSELL C: Industriel Prosperity and the Farmer. The Institute of Economics. Investigations in Agricultural Economics. New York, The Macmiltan Company, 1927. XIII + 286 S”., Nationaløkonomisk Tidsskrift, 36. Tilgængelig hos: https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/57212 (Set: 5 december 2025).