APA-viite (7. p.)
Sugar, J. (2014). Introduction to aging: A positive, interdisciplinary approach. Springer Publishing Company.
Chicago-viite (17. p.)
Sugar, Judith. Introduction to Aging: A Positive, Interdisciplinary Approach. New York, NY: Springer Publishing Company, 2014.
MLA-viite (9. p.)
Sugar, Judith. Introduction to Aging: A Positive, Interdisciplinary Approach. Springer Publishing Company, 2014.
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