Roberts, P. (2000). How poetry works (2nd ed.). Penguin Books.
芝加哥风格引文Roberts, Philip. How Poetry Works. 2nd ed. Harmondsworth, Middlesex, England ; New York, New York, U.S.A.: Penguin Books, 2000.
MLA引文Roberts, Philip. How Poetry Works. 2nd ed. Penguin Books, 2000.
警告：这些引文格式不一定是100％准确.