ebrary, Inc, Pennington, P., & Sperling, M. (2011). Geoffrey Hill and his contexts. Peter Lang.
芝加哥风格引文ebrary, Inc, Piers Pennington, 与 Matthew Sperling. Geoffrey Hill and His Contexts. Oxford ; New York: Peter Lang, 2011.
MLA引文ebrary, Inc, et al. Geoffrey Hill and His Contexts. Peter Lang, 2011.
警告：这些引文格式不一定是100％准确.