Silk, L. S. (1974). Contemporary economics; principles and issues. [s.l.]: Pyramid Books.
Citación estilo ChicagoSilk, Leonard S. Contemporary Economics; Principles and Issues. [s.l.]: Pyramid Books, 1974.
Cita MLASilk, Leonard S. Contemporary Economics; Principles and Issues. [s.l.]: Pyramid Books, 1974.
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