Cita APA (7a ed.)

Butler, H. B. (1928). Labour problems in southern Africa. International Labour Organization.

Cita Chicago Style (17a ed.)

Butler, H. B. Labour Problems in Southern Africa. International Labour Organization, 1928.

Cita MLA (9a ed.)

Butler, H. B. Labour Problems in Southern Africa. International Labour Organization, 1928.

Precaución: Estas citas no son 100% exactas.