APA

Barros R., Sawyer D., . (1993). Unequal opportunity to survive, education and regional disparities in Brazil. Brasilia: Instituto de Pesquisa Econômica Aplicada.

Chicago

Barros Ricardo, Sawyer Diana, . 1993. Unequal opportunity to survive, education and regional disparities in Brazil. Brasilia: Instituto de Pesquisa Econômica Aplicada.

Harvard

Barros R., Sawyer D., . (1993). Unequal opportunity to survive, education and regional disparities in Brazil. Brasilia: Instituto de Pesquisa Econômica Aplicada.

MLA

Barros Ricardo, Sawyer Diana, . Unequal opportunity to survive, education and regional disparities in Brazil. Brasilia: Instituto de Pesquisa Econômica Aplicada. 1993.