(2019). The survey of adult skills: Reader's companion (Third edition.). Organisation for Economic Co-Operation and Development.
Lua i Stíl Chicago (17ú heag.)The Survey of Adult Skills: Reader's Companion. Third edition. Paris, France: Organisation for Economic Co-Operation and Development, 2019.
Lua MLA (9ú heag.)The Survey of Adult Skills: Reader's Companion. Third edition. Organisation for Economic Co-Operation and Development, 2019.
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