Langlois, C., & Seignobos, C. Introduction to the Study of History. Holt and Company.
Chicago-Zitierstil (17. Ausg.)Langlois, Ch.V, und Ch Seignobos. Introduction to the Study of History. New York: Holt and Company.
MLA-Zitierstil (8. Ausg.)Langlois, Ch.V, und Ch Seignobos. Introduction to the Study of History. Holt and Company.
警告：這些引文格式不一定是100％准確.