10Black, Richard, Jonathan Crush, Sally Peberdy, Savina Ammassari, Lyndsay M Hilker, Shannon Mouillesseaux, Claire Pooley, and Radha Rajkotia. Migration and development in Africa: An overview.: Southern African Migration Project and the Centre for Globalization, Poverty and Migration of Sussex University, 2006.
18Castaldo, Adriana, Saskia Gent, Gunjan Sondhi, and Ann Whitehead. "Child migration in national surveys."Development Research Centre on Migration, Globalisation and Poverty Working Paper No. T-28 (2009).