Lua APA (7ú heag.)

Ricardo, D., & Kolthammer, F. W. (2004). The principles of political economy and taxation. Dover Publications.

Lua i Stíl Chicago (17ú heag.)

Ricardo, David, agus F. W. Kolthammer. The Principles of Political Economy and Taxation. Mineola, N.Y.: Dover Publications, 2004.

Lua MLA (8ú heag.)

Ricardo, David, agus F. W. Kolthammer. The Principles of Political Economy and Taxation. Dover Publications, 2004.

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