T. B. Friis, Finn. 1942. “WORLD ECONOMIC SURVEY. Ninth Year. 1939-M. League of Nations. Geneva 1941. 275 S. STATISTICAL YEAR-BOOK OF THE LEAGUE OF NATIONS. 1940-41. Geneva 1941. 271 S”. Nationaløkonomisk Tidsskrift 80 (januar). https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/60154.