Lua APA (7ú heag.)

Pugel, T. A. (2007). International Economics (13th.). McGraw Hill Education (India) Private Limited.

Lua i Stíl Chicago (17ú heag.)

Pugel, Thomas A. International Economics. 13th. New Delhi: McGraw Hill Education (India) Private Limited, 2007.

Lua MLA (9ú heag.)

Pugel, Thomas A. International Economics. 13th. McGraw Hill Education (India) Private Limited, 2007.

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