National Research Council (U.S.). Committee on Vocational Education Research and Development & ebrary, Inc. (1976). Assessing vocational education research and development. National Academy of Sciences.
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Chicago Style (17th ed.) Zitazioa
National Research Council (U.S.). Committee on Vocational Education Research and Development eta Inc ebrary. Assessing Vocational Education Research and Development. Washington: National Academy of Sciences, 1976.
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MLA (9th ed.) Zitazioa
National Research Council (U.S.). Committee on Vocational Education Research and Development eta Inc ebrary. Assessing Vocational Education Research and Development. National Academy of Sciences, 1976.
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Kontuz: berrikusi erreferentzia hauek erabili aurretik.