Wendy Wren. (2005). Nelson Thornes Framework English (New edition.). Nelson Thornes Ltd.
芝加哥风格引文Wendy Wren. Nelson Thornes Framework English. New edition. Nelson Thornes Ltd, 2005.
MLA引文Wendy Wren. Nelson Thornes Framework English. New edition. Nelson Thornes Ltd, 2005.
警告：这些引文格式不一定是100％准确.