APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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