Costa, P. T. M. (2009). Fighting forced labour: The example of Brazil. International Labour Office.
Chicago-čujuhus (17. p.)Costa, Patricía Trindade Maranhão. Fighting Forced Labour: The Example of Brazil. Geneva: International Labour Office, 2009.
MLA-čujuhus (9. p.)Costa, Patricía Trindade Maranhão. Fighting Forced Labour: The Example of Brazil. International Labour Office, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.