Duiker, W. J., & Spielvogel, J. J. (2019). World history: Volume I: to 1800 (ninth edition.). Wadsworth Cengage Learning.
芝加哥风格引文Duiker, William J., 与 Jackson J. Spielvogel. World History: Volume I: To 1800. ninth edition. Australia: Wadsworth Cengage Learning, 2019.
MLA引文Duiker, William J., 与 Jackson J. Spielvogel. World History: Volume I: To 1800. ninth edition. Wadsworth Cengage Learning, 2019.
警告：这些引文格式不一定是100％准确.