BOLN, W. H. (1988). Contemporary Retailing William H. Bolen. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)BOLN, William H. Contemporary Retailing William H. Bolen. Prentice-Hall, 1988.
Lua MLA (8ú heag.)BOLN, William H. Contemporary Retailing William H. Bolen. Prentice-Hall, 1988.
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