Hinzen, H., & Knoll, J. H. (2009). Adult education and continuing education policy: Science in between society and politics. Bonn.
Čikaški stil citiranja (17. izdanje)Hinzen, Heribert, i Jooachim H. Knoll. Adult Education and Continuing Education Policy: Science in Between Society and Politics. Poland: Bonn, 2009.
MLA način citiranja (8. izdanje)Hinzen, Heribert, i Jooachim H. Knoll. Adult Education and Continuing Education Policy: Science in Between Society and Politics. Bonn, 2009.
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