Spring, D. European Landed Elites in the Nineteenth Century. Johns Hopkins University Press.
芝加哥风格引文Spring, David. European Landed Elites in the Nineteenth Century. Baltimore: Johns Hopkins University Press.
MLA引文Spring, David. European Landed Elites in the Nineteenth Century. Johns Hopkins University Press.
警告：这些引文格式不一定是100％准确.