de Haas, H. (2009). Migration system formation and decline: A theoretical inquiry into the self-perpetuating and self-undermining dynamics of migration processes. International Migration Institute.
Chicago-viite (17. p.)de Haas, H. Migration System Formation and Decline: A Theoretical Inquiry into the Self-perpetuating and Self-undermining Dynamics of Migration Processes. International Migration Institute, 2009.
MLA-viite (9. p.)de Haas, H. Migration System Formation and Decline: A Theoretical Inquiry into the Self-perpetuating and Self-undermining Dynamics of Migration Processes. International Migration Institute, 2009.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.