Ritchie, D. A. (1999). American history: The modern era since 1865. New York: Glencoe/McGraw-Hill.
Trích dẫn kiểu ChicagoRitchie, Donald A. American History: The Modern Era Since 1865. New York: Glencoe/McGraw-Hill, 1999.
MLA引文Ritchie, Donald A. American History: The Modern Era Since 1865. New York: Glencoe/McGraw-Hill, 1999.
警告:这些引文格式不一定是100%准确.