APA
Haupt S., . (1998). Testing Incentives for Illegal Employment: Implicit VS Trade Union Bargaining. Hamburg: HWWA-Institut für Wirtschaftsforschung,Hamburg.
Chicago
Haupt Stefan, . 1998. Testing Incentives for Illegal Employment: Implicit VS Trade Union Bargaining. Hamburg: HWWA-Institut für Wirtschaftsforschung,Hamburg.
Harvard
Haupt S., . (1998). Testing Incentives for Illegal Employment: Implicit VS Trade Union Bargaining. Hamburg: HWWA-Institut für Wirtschaftsforschung,Hamburg.
MLA
Haupt Stefan, . Testing Incentives for Illegal Employment: Implicit VS Trade Union Bargaining. Hamburg: HWWA-Institut für Wirtschaftsforschung,Hamburg. 1998.