(1926). Industrial inspection in Germany in 1923 and 1924. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Industrial Inspection in Germany in 1923 and 1924. International Labour Organization, 1926.
Citatione MLA (9a ed.)Industrial Inspection in Germany in 1923 and 1924. International Labour Organization, 1926.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.