League of Nations. Committee of Statistical Experts. (1938). Statistics of the gainfully-occupied population; definitions and classifications recommended by the Committee of Statistical Experts.
Citazione stile Chigago Style (17a edizione)League of Nations. Committee of Statistical Experts. Statistics of the Gainfully-occupied Population; Definitions and Classifications Recommended by the Committee of Statistical Experts. Geneva, 1938.
Citatione MLA (9a ed.)League of Nations. Committee of Statistical Experts. Statistics of the Gainfully-occupied Population; Definitions and Classifications Recommended by the Committee of Statistical Experts. 1938.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.