Palmer, R. R. (. R. (2007). A history of the modern world. Boston: McGraw-Hill.
Trích dẫn kiểu ChicagoPalmer, R. R. (Robert Roswell). A History of the Modern World. Boston: McGraw-Hill, 2007.
MLA CitationPalmer, R. R. (Robert Roswell). A History of the Modern World. Boston: McGraw-Hill, 2007.
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