APA
UNITED NATIONS I. L. ). T. S., UNITED NATIONS I. L. ). T. S., . (1929). Forced labour. GENEVA: International Labour Office.
Chicago
UNITED NATIONS INTERNATIONAL LABOUR(Conference ) TWELFTH SESSION, UNITED NATIONS INTERNATIONAL LABOUR(Conference ) TWELFTH SESSION, . 1929. Forced labour. GENEVA: International Labour Office.
Harvard
UNITED NATIONS I. L. ). T. S., UNITED NATIONS I. L. ). T. S., . (1929). Forced labour. GENEVA: International Labour Office.
MLA
UNITED NATIONS INTERNATIONAL LABOUR(Conference ) TWELFTH SESSION, UNITED NATIONS INTERNATIONAL LABOUR(Conference ) TWELFTH SESSION, . Forced labour. GENEVA: International Labour Office. 1929.
