APA-čujuhus (7. p.)
Metcalf, A. A. (2010). OK: The improbable story of America's greatest word. Oxford University Press.
Chicago-čujuhus (17. p.)
Metcalf, Allan A. OK: The Improbable Story of America's Greatest Word. Oxford ; New York: Oxford University Press, 2010.
MLA-čujuhus (9. p.)
Metcalf, Allan A. OK: The Improbable Story of America's Greatest Word. Oxford University Press, 2010.
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