APA-čujuhus (7. p.)
Langan, T., & Calcagno, A. (2009). Human being. University of Missouri Press.
Chicago-čujuhus (17. p.)
Langan, Thomas, juo Antonio Calcagno. Human Being. Columbia, Mo.: University of Missouri Press, 2009.
MLA-čujuhus (9. p.)
Langan, Thomas, juo Antonio Calcagno. Human Being. University of Missouri Press, 2009.
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