League of Nations. (1926). Memorandum on balance of payments and foreign trade balances, 1911-1925. [League of Nations].
Chicago-referens (17:e uppl.)League of Nations. Memorandum on Balance of Payments and Foreign Trade Balances, 1911-1925. Geneva: [League of Nations], 1926.
MLA-referens (8:e uppl.)League of Nations. Memorandum on Balance of Payments and Foreign Trade Balances, 1911-1925. [League of Nations], 1926.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.