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.