Tikkanen, T. (1998). Learning and education of older workers: Lifelong learning at the margin.
Chicago-viite (17. p.)Tikkanen, Tarja. Learning and Education of Older Workers: Lifelong Learning at the Margin. Jyväskylä, 1998.
MLA-viite (9. p.)Tikkanen, Tarja. Learning and Education of Older Workers: Lifelong Learning at the Margin. 1998.
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