Birdsall, N. (2006). The world is not flat: Inequality and injustice in our global economy. UNU/WIDER.
Chicago-viite (17. p.)Birdsall, Nancy. The World Is Not Flat: Inequality and Injustice in Our Global Economy. Helsinki: UNU/WIDER, 2006.
MLA-viite (9. p.)Birdsall, Nancy. The World Is Not Flat: Inequality and Injustice in Our Global Economy. UNU/WIDER, 2006.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.