Ehrenfeld, D. (2002). Swimming lessons: Keeping afloat in the age of technology. Oxford University Press.
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Chicago-čujuhus (17. p.)
Ehrenfeld, David. Swimming Lessons: Keeping Afloat in the Age of Technology. London ; New York: Oxford University Press, 2002.
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MLA-čujuhus (9. p.)
Ehrenfeld, David. Swimming Lessons: Keeping Afloat in the Age of Technology. Oxford University Press, 2002.
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