Lua APA (7ú heag.)

Barzelay, M., & Campbell, C. (2003). Preparing for the future: Strategic planning in the U.S. Air Force. Brookings Institution Press.

Lua i Stíl Chicago (17ú heag.)

Barzelay, Michael, agus Colin Campbell. Preparing for the Future: Strategic Planning in the U.S. Air Force. Washington, D.C.: Brookings Institution Press, 2003.

Lua MLA (9ú heag.)

Barzelay, Michael, agus Colin Campbell. Preparing for the Future: Strategic Planning in the U.S. Air Force. Brookings Institution Press, 2003.

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