Engel, C. (2000). Comments on Obstfeld and Rogoffs "the six major puzzles in international macroeconomics: Is there a common causen". National Bureau of Economic Research.
Cita Chicago (17th ed.)Engel, Charles. Comments on Obstfeld and Rogoffs "the Six Major Puzzles in International Macroeconomics: Is There a Common Causen". Cambridge: National Bureau of Economic Research, 2000.
Cita MLA (9th ed.)Engel, Charles. Comments on Obstfeld and Rogoffs "the Six Major Puzzles in International Macroeconomics: Is There a Common Causen". National Bureau of Economic Research, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.