Costello, B. (2003). Shifting ground: Reinventing landscape in modern American poetry. Harvard University Press.
芝加哥风格引文Costello, Bonnie. Shifting Ground: Reinventing Landscape in Modern American Poetry. Cambridge: Harvard University Press, 2003.
MLA引文Costello, Bonnie. Shifting Ground: Reinventing Landscape in Modern American Poetry. Harvard University Press, 2003.
警告：这些引文格式不一定是100％准确.