Cita APA (7a ed.)

Albrecht, H. (2003). The informal economy: A summary and perspectives. The informal economy: threat and opportunity in the city, 399-424.

Cita Chicago Style (17a ed.)

Albrecht, Hans-Jörg. "The Informal Economy: A Summary and Perspectives." The Informal Economy: Threat and Opportunity in the City 2003: 399-424.

Cita MLA (9a ed.)

Albrecht, Hans-Jörg. "The Informal Economy: A Summary and Perspectives." The Informal Economy: Threat and Opportunity in the City, 2003, pp. 399-424.