Hinzen, H., & Knoll, J. H. (2009). Adult education and continuing education policy: Science in between society and politics. Bonn.
Lua i Stíl Chicago (17ú heag.)Hinzen, Heribert, agus Jooachim H. Knoll. Adult Education and Continuing Education Policy: Science in Between Society and Politics. Poland: Bonn, 2009.
Lua MLA (8ú heag.)Hinzen, Heribert, agus Jooachim H. Knoll. Adult Education and Continuing Education Policy: Science in Between Society and Politics. Bonn, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.