(1928). Seasonal fluctuations in migration. Geneva: International Labour Office.
Citazione stile Chigago Style (17a edizione)Seasonal Fluctuations in Migration. Geneva: International Labour Office, 1928.
Citatione MLA (8a ed.)Seasonal Fluctuations in Migration. Geneva: International Labour Office, 1928.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.