(1933). Native labour in Northern Rhodesia in 1932. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Native Labour in Northern Rhodesia in 1932. International Labour Organization, 1933.
Citatione MLA (9a ed.)Native Labour in Northern Rhodesia in 1932. International Labour Organization, 1933.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.