V. Birck, L. 1920. “ALF. MARSHALL: Industry and Trade. (A Study of Industrial and Business Organisation and of Their Influence on the Conditions of Various Classes and Nations. (London 1919: Macmillan & Co.)”. Nationaløkonomisk Tidsskrift 3 (januar). https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/59559.