Cita APA (7th ed.)

Rahlf, T., & Metz, J. (2012). GESIS-Technical Reports. GESIS.

Cita Chicago (17th ed.)

Rahlf, Thomas, i Jürgen Metz. GESIS-Technical Reports. Mannheim: GESIS, 2012.

Cita MLA (8th ed.)

Rahlf, Thomas, i Jürgen Metz. GESIS-Technical Reports. GESIS, 2012.