Cita APA (7a ed.)

Lüttinger, P., & Wolf, C. (2011). GESIS-Technical Reports. GESIS.

Cita Chicago Style (17a ed.)

Lüttinger, Paul, y Christof Wolf. GESIS-Technical Reports. Mannheim: GESIS, 2011.

Cita MLA (8a ed.)

Lüttinger, Paul, y Christof Wolf. GESIS-Technical Reports. GESIS, 2011.