Roncaglia, A. (2000). Piero Sraffa: His life, thought, and cultural heritage. Routledge.
芝加哥风格引文Roncaglia, Alessandro. Piero Sraffa: His Life, Thought, and Cultural Heritage. New York: Routledge, 2000.
MLA引文Roncaglia, Alessandro. Piero Sraffa: His Life, Thought, and Cultural Heritage. Routledge, 2000.
警告：这些引文格式不一定是100％准确.