Cita APA (7th ed.)
Harper, M. S. (2009). Use trouble: Poems. University of Illinois Press.
Cita Chicago (17th ed.)
Harper, Michael S. Use Trouble: Poems. Urbana: University of Illinois Press, 2009.
Cita MLA (9th ed.)
Harper, Michael S. Use Trouble: Poems. University of Illinois Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.