Harper, M. S. (2009). Use trouble: Poems. University of Illinois Press.
芝加哥风格引文Harper, Michael S. Use Trouble: Poems. Urbana: University of Illinois Press, 2009.
MLA引文Harper, Michael S. Use Trouble: Poems. University of Illinois Press, 2009.
警告：这些引文格式不一定是100％准确.