PNG, I. (2013). Managerial Economics - 4th Edition. Routledge Taylor & Francis Group.
芝加哥风格引文PNG, Ivan. Managerial Economics - 4th Edition. London: Routledge Taylor & Francis Group, 2013.
MLA引文PNG, Ivan. Managerial Economics - 4th Edition. Routledge Taylor & Francis Group, 2013.
警告：这些引文格式不一定是100％准确.