German Adult Education Association, Bonn (Germany). Inst. for International Cooperation, & Hinzen, H. (1993). Adult Education and Development, 1993. Distributed by ERIC Clearinghouse.
Lua i Stíl Chicago (17ú heag.)German Adult Education Association, Bonn (Germany). Inst. for International Cooperation, agus Heribert Hinzen. Adult Education and Development, 1993. [Washington, D.C.]: Distributed by ERIC Clearinghouse, 1993.
Lua MLA (8ú heag.)German Adult Education Association, Bonn (Germany). Inst. for International Cooperation, agus Heribert Hinzen. Adult Education and Development, 1993. Distributed by ERIC Clearinghouse, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.