Schalock, R. L. (1990). Quality of life: Perspectives and issues. American Association on Mental Retardation.
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Chicago-čujuhus (17. p.)
Schalock, Robert L. Quality of Life: Perspectives and Issues. Washington, DC: American Association on Mental Retardation, 1990.
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MLA-čujuhus (9. p.)
Schalock, Robert L. Quality of Life: Perspectives and Issues. American Association on Mental Retardation, 1990.
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