Plumb, J. H. (1964). Crisis in the humanities. Penguin Books.
芝加哥风格引文Plumb, J. H. Crisis in the Humanities. Baltimore: Penguin Books, 1964.
MLA引文Plumb, J. H. Crisis in the Humanities. Penguin Books, 1964.
警告：这些引文格式不一定是100％准确.
APA引文