Schumpeter, J. A. (2008). Capitalism, Socialism and Democracy (ia 4th ed.). Project Management Institute, Inc.
芝加哥风格引文Schumpeter, Joseph A. Capitalism, Socialism and Democracy. ia 4th ed. Pennsylvan: Project Management Institute, Inc, 2008.
MLA引文Schumpeter, Joseph A. Capitalism, Socialism and Democracy. ia 4th ed. Project Management Institute, Inc, 2008.
警告：这些引文格式不一定是100％准确.