Holland, J. L. (1997). Making vocational choices: A theory of vocational personalities and work environments (3rd ed.). Odessa, Fla.: Psychological Assessment Resources.
Chicago-tyylinen lähdeviittausHolland, John L. Making Vocational Choices: A Theory of Vocational Personalities and Work Environments. 3rd ed. Odessa, Fla.: Psychological Assessment Resources, 1997.
MLA-viiteHolland, John L. Making Vocational Choices: A Theory of Vocational Personalities and Work Environments. 3rd ed. Odessa, Fla.: Psychological Assessment Resources, 1997.
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