BALLOU, R. H. (1992). Business Logistic Management Ronald H. Ballou. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)BALLOU, Ronald H. Business Logistic Management Ronald H. Ballou. Prentice-Hall, 1992.
Lua MLA (8ú heag.)BALLOU, Ronald H. Business Logistic Management Ronald H. Ballou. Prentice-Hall, 1992.
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