Duiker, W. J., & Spielvogel, J. J. (2019). World history (Ninth edition.). Wadsworth Cengage Learning.
芝加哥风格引文Duiker, William J., 与 Jackson J. Spielvogel. World History. Ninth edition. Australia: Wadsworth Cengage Learning, 2019.
MLA引文Duiker, William J., 与 Jackson J. Spielvogel. World History. Ninth edition. Wadsworth Cengage Learning, 2019.
警告：这些引文格式不一定是100％准确.