Lua APA (7ú heag.)

Schmitt-Beck, R. (2009). The German longitudinal election study (GLES).

Lua i Stíl Chicago (17ú heag.)

Schmitt-Beck, Rüdiger. The German Longitudinal Election Study (GLES). Mannheim, 2009.

Lua MLA (8ú heag.)

Schmitt-Beck, Rüdiger. The German Longitudinal Election Study (GLES). 2009.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.