Shawyer, D. L. (1956). The Development of theories of retail price determination in England and the United States. University of Illinois Press.
Chicago-viite (17. p.)Shawyer, Donald L. The Development of Theories of Retail Price Determination in England and the United States. Urbana: University of Illinois Press, 1956.
MLA-viite (9. p.)Shawyer, Donald L. The Development of Theories of Retail Price Determination in England and the United States. University of Illinois Press, 1956.
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