APA-čujuhus (7. p.)
Harper, M. S. (2009). Use trouble: Poems. University of Illinois Press.
Chicago-čujuhus (17. p.)
Harper, Michael S. Use Trouble: Poems. Urbana: University of Illinois Press, 2009.
MLA-čujuhus (9. p.)
Harper, Michael S. Use Trouble: Poems. University of Illinois Press, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.