Herrin, J. (2020). Ravenna: Capital of empire, crucible of Europe. Princeton University Press.
芝加哥风格引文Herrin, Judith. Ravenna: Capital of Empire, Crucible of Europe. Princeton: Princeton University Press, 2020.
MLA引文Herrin, Judith. Ravenna: Capital of Empire, Crucible of Europe. Princeton University Press, 2020.
警告：这些引文格式不一定是100％准确.