Du Bois, W. E. B. "The Sorrow Songs": W. E. B. Du Bois. American literature, American culture.(1999).
Chicagoスタイル(17版)引用形式Du Bois, W. E. B. ""The Sorrow Songs": W. E. B. Du Bois." American Literature, American Culture.(1999) .
MLA(8版)引用形式Du Bois, W. E. B. ""The Sorrow Songs": W. E. B. Du Bois." American Literature, American Culture.(1999), .
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