American Association for Adult and Continuing Education. (1989). Adult learning. American Association for Adult & Continuing Education.
Chicago-viite (17. p.)American Association for Adult and Continuing Education. Adult Learning. Washington, D.C.: American Association for Adult & Continuing Education, 1989.
MLA-viite (9. p.)American Association for Adult and Continuing Education. Adult Learning. American Association for Adult & Continuing Education, 1989.
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