American Association for Adult and Continuing Education. (1989). Adult learning. American Association for Adult & Continuing Education.
Lua i Stíl Chicago (17ú heag.)American Association for Adult and Continuing Education. Adult Learning. Washington, D.C.: American Association for Adult & Continuing Education, 1989.
Lua MLA (9ú heag.)American Association for Adult and Continuing Education. Adult Learning. American Association for Adult & Continuing Education, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.