APA-referens (7:e uppl.)

Haupt, S. (1998). Testing incentives for illegal employment: Implicit contracts vs trade union bargaining.

Chicago-referens (17:e uppl.)

Haupt, Stefan. Testing Incentives for Illegal Employment: Implicit Contracts Vs Trade Union Bargaining. Hamburg, 1998.

MLA-referens (8:e uppl.)

Haupt, Stefan. Testing Incentives for Illegal Employment: Implicit Contracts Vs Trade Union Bargaining. 1998.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.