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Lua i Stíl Chicago (17ú heag.)National University Continuing Education Association (U.S.) agus University Continuing Education Association. Continuing Higher Education Review: The Journal of the National University Continuing Education Association. [Columbus, Ohio: Ohio State University, Office of Continuing Education, 1987.
Lua MLA (9ú heag.)National University Continuing Education Association (U.S.) agus University Continuing Education Association. Continuing Higher Education Review: The Journal of the National University Continuing Education Association. Ohio State University, Office of Continuing Education, 1987.