Lua APA (7ú heag.)

Schumpeter, J. A. (2008). Capitalism, Socialism and Democracy (ia 4th ed.). Project Management Institute, Inc.

Lua i Stíl Chicago (17ú heag.)

Schumpeter, Joseph A. Capitalism, Socialism and Democracy. ia 4th ed. Pennsylvan: Project Management Institute, Inc, 2008.

Lua MLA (9ú heag.)

Schumpeter, Joseph A. Capitalism, Socialism and Democracy. ia 4th ed. Project Management Institute, Inc, 2008.

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