KRAMER, L. P. A history of Europe in the modern world. McGraw-Hill Education.
芝加哥风格引文KRAMER, Lloyd Palmer. A History of Europe in the Modern World. McGraw-Hill Education.
MLA引文KRAMER, Lloyd Palmer. A History of Europe in the Modern World. McGraw-Hill Education.
警告：这些引文格式不一定是100％准确.