Boyes, W. J. (1999). Fundamentals of economics. Houghton Mifflin.
Trích dẫn kiểu ChicagoBoyes, William J. Fundamentals of Economics. Houghton Mifflin, 1999.
Deismireacht MLABoyes, William J. Fundamentals of Economics. Houghton Mifflin, 1999.
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